Sure, I did that. I had 11 pins, now I have 3. They were all good games, and I miss some of them sometimes, but I filled the space with other things, mostly candy cabs. Do they bring me personal enjoyment the way my pins did? Not really, playing a bunch of arcade games by myself doesn't do a lot for me. Pinball is a much more satisfying solo experience.
But I host my arcade every Thursday night, been doing it weekly for the last 5 years, and my friends all come over for Street Fighter and the people are everything. Playing with good friends every week is better than any collection. They don't really care about the pins. Look at this photo, games aren't even on.
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If I lost interest in fighting games, or people stopped coming? I'd probably sell the cabs and do something else. Unlikely that I'd buy more pins at today's prices, who knows.
The point is you should what makes you happy. I still have friends in pinball, I still enjoy it, I'm working on new mods again, it's nice to be involved. But the cycle of buying new games stopped being interesting for me so I stopped. Do whatever works for you.