Moses did not want to enter the Promised Land

The God of Judaism is a national God. He liberated a people from the bondage in an ancient empire, Egypt. He gave them the Ten Commandments to make them into a people, not twelve tribes of mob. He established a covenant with all the Israelites, not with individuals. In short, Yahweh was a national God.

Moses was their liberator. However, because of them, Moses was not allowed to enter the Promised Land.
Let me go over, I pray, and see the good land beyond the Jordan, that goodly hill country, and Lebanon.'
But the LORD was angry with me on your account, and would not hearken to me; and the LORD said to me, `Let it suffice you; speak no more to me of this matter (Deuteronomy 3:25-26).
That was not fair to the Israelites. It was the "sin" of Moses in the Meribah incident. Moses should not put the blame on them.
The Israelites were complaining, as they had done many times before, about having no water to drink. Of course Moses had the full support of God who gave him the following instruction.
Take the rod, and assemble the congregation, you and Aaron your brother, and tell the rock before their eyes to yield its water; so you shall bring water out of the rock for them; so you shall give drink to the congregation and their cattle (Numbers 20:8).
God told Moses to tell the rock to give water. However, Moses overstepped God's instruction. He had lost his impatience with the people.
And Moses and Aaron gathered the assembly together before the rock, and he said to them, "Hear now, you rebels; shall we bring forth water for you out of this rock?"
And Moses lifted up his hand and struck the rock with his rod twice; and water came forth abundantly, and the congregation drank, and their cattle (Numbers 20:10-11).
Instead of speaking to the rock, Moses spoke to the people. What was worse, he struck the rock with his rod instead. Water did come out, but Moses had to pay a heavy price for that.
And the LORD said to Moses and Aaron, "Because you did not believe in me, to sanctify me in the eyes of the people of Israel, therefore you shall not bring this assembly into the land which I have given them." (Numbers 20:12)
I have a feeling that Moses, for some reasons which are worth exploring, had decided not to enter the Promised Land, not to enjoy the fruit of his hard work.

Moses was raised in the Egyptian court by an Egyptian princess. It was difficult for him to identify himself as an Israelite. He fled Egypt after killing an Egyptian and spent some forty years in Midian. Moses had always been a sojourner, a man without root. When God called him to liberate the Israelites, Moses was not too eager to risk his life for a people alien to him. He refused fives times before God played rough. When he returned to Egypt, Moses was already 80 years old. I am sure he was not circumcised. Therefore, we find a mysterious little legend of the "bridegroom of blood" in Exodus 4:25-27. This legend affirmed the non-Israelite status of Moses.
When the Israelites left Egypt, they left like plunderers, getting gold and jewellery from the Egyptians. The Israelites were a truly stiff-necked people. They always wanted to return to the comforts in Egypt. They were a difficult people to pacify. As a consequence of obtaining the Ten Commandments, Moses' face shone and had to be covered with a veil. This further isolated him from his fellow Israelites. Though he enjoyed exclusive personal interaction with God, his authority had always been challenged, even by his own brother Aaron and sister Miriam. In the spies incident, God punished them to wander in the wilderness for forty years to kill off those older than twenty. Moses could sense that he would not enter the Promised Land either. He had acted as a midwife to bring forth a new nation out of an ancient Empire, and he knew that he would not be a part of it.
His boss was not an easy boss to serve either. Yahweh was terribly mighty. His temper was hot though Moses could reason with Him. God was a dangerous piece of good to carry around. Moses had enough of it. He had finished playing his historical role and a pretty lonely one too.
know therefore this day, and lay it to your heart, that the LORD is God in heaven above and on the earth beneath; there is no other.
Therefore you shall keep his statutes and his commandments, which I command you this day, that it may go well with you, and with your children after you, and that you may prolong your days in the land which the LORD your God gives you for ever (Deuteronomy 4:39-40)

Dear Lord, it is understandable that the Old Testament presents You in a harsh light. The Jews know You as a national God, not a personal one. At the end of times, You sent us Jesus, Your Son to build up personal relationship with us, showing us Your true face. May we make good use of the opportunity You give us to help build Your Kingdom on earth. Amen.