Why were Paleolithic nomads always on the move?

In my opinion, I believe Paleolithic people were always on the move bc, One: In order for them to survive, they would have to go hunt for food and prepare it. Two: Also bc, in order for them to protect themselves and their families they would have to find more than one shelter to live in, in case if and dangerous animal were to follow them to their shelter they wouldn't have to worry about one of their shelters getting ruined bc, they have more than one.

These are my two reasons for why I think the Paleolithic people move around a lot. I hope you can agree with me and if not tell me why you don't agree with me and if you do agree with me tell me why you do.

sincerely,

Jocelyn E.Flowers