Oh man, this part of moving is kind of complicated too. When I moved out of the country, it was a little complicated to have to leave behind all those customs and habits that I had had for 18 years straight. Seeing my friends, being in the comfort of the room you've known your whole life, and just being with the people you've been with your whole life... it's a complicated thing. In a way, a part of you gets attached to all those memories.
I think it's okay to take all those memories with you, no matter how "useless" they are in your current life, I think it's always nice to look back and see what we went through to be who we are today :)
Sry for not commenting this earlier man! I've been a bit sick and solving some problems irl. Send you a hug and hope you can lock your next house soon :)