Hi Aishah, this is Tara. I loved your post. I also enjoy collections but at the same time, too much stuff drives me crazy. So really I'm in a constant battle between caring for things I enjoy and getting rid of things (even if I enjoy them).
I feel similar, in that one day we will all be gone and will have to leave all of our stuff behind anyway. I like to use all of the things that I have because I am also afraid of something happening like what happened with the woman and the fire burning her candles. I also figured that no one should have to be burdened with a bunch of my old stuff to deal with should I unexpectedly pass away.
When I was younger, I collected stickers, stamps, erasers, pens/pencils, trading cards (boy bands, garbage pail kids), and stuffed animals mostly. Now I mostly "collect" perishable and usable items (then I use them lol). :) I also collect internet memes since they can be super inspirational or funny.