Being a collector has the issue that all that stuff needs to be stored somewhere. Preferably on display as surely you want to show and enjoy your collection instead of just storing it somewhere put of the way, out of sight.
Of course there are different things to collect. Some of them take less space than others. My biggest collection, MtG cards doesn't really take that much space. It's a couple of cardboard boxes and binders, not that much to show off. Even if I wanted to put them on display they probably wouldn't take thqt much space. At least the ones worth displaying.
Like all those cards, the boardgame collection is also more "for use" than showing off. Sure they take a lot more space and are on display on several Kallax shelves. I still consider them more as stored there than on display.
Today I was able to complete yet another two LEGO models. Unlike the games these are purely for display (and building) so they need some shelf space too. Unfortunately all those boardgames already occupy most of the available shelves and there is not much room for additional ones. Maybe I could sneak in a couple more shelves around the house, but wife is already complaining she doesn't have her own space as all around is filled with my stuff.
Maybe I need to start getting rid of some of that stuff. Or just move some of my collection to garage and put it on display there.