I used to be a one-game guy, maybe I'd dip into an arcadey thing or something really short during but mostly focussed on the one game. I find that harder and harder to do these days though, I'm just not in a great place right now and various things causing me to not want to game willy nilly, I really have to be in the mood/mode for it.
I'm not too bad on buying games and not playing them, except deep deep sales, so when its like less than a £5 I'll grab something if I know I'll play it later, just to save money because otherwise I'll buy it at the price it is when I want to play it (Which will still be discounted I just mean, if its a deeeep sale I grab it to play down the line).
My backlog is mostly due to free games, gifts from others or games that I bought and then there was a technical issue or it got bad press and I want to come at later on without that negativity hanging over me (Like Death Stranding, although I'm not sure I'll be able to upgrade my PS4 copy to this new DC which will suck ass if true and I probably won't buy and just wait for a deep sale so I'm not doing a full price double dip, I've waited since end of 2019, whats another year? lol) I try not to sit on bought games because they will get swept to the wayside.
There are a few games I enjoyed but had issues with which I intend to go back to but just not now, so those are technically in progress still, namely Phantom Pain, God of War 2018 and RDR 2.
TL;DR - I was a complete whore when I was a boy, as a young man I became a good monogamous boy and slowly but surely I'm becoming a tart again in my old, old age of 34. By the time I hit 40 I may be a complete slutbag, who knows what the future holds.