Answer:
I have memories but none of my own whatever's on my inside is what is shown. If I'm ever different it's because you changed me I feel like a decoration here for you to arrange me.
If I have it I don't share it. If I share it I don't have it. What is it?
You can see it everyday, but cannot touch it at will. What is it?
The higher I climb, the hotter I engage. I cannot escape my crystal cage. What am I?
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
Give it food and it will live, give it water and it will die.