I know they exist (the sales by topics) but my emphasis was on "most".

And just like weight and fashion changes for shirts, I may change my schedule and interests not to fit games I bought years ago.

Where one draws the line on min/maxing is deeply personal. I'm happy to take a risk that my tastes will remain close enough to justify the purchase, evidently you feel otherwise. Neither of us are wrong (other than you, obviously - we're arguing on the internet so I need to be needlessly confrontational, it's the law or some old charter or something).

I was mostly replying because I don't think your way is wrong but I don't think mine is either. I have at least a thousand games in my collection. Unless something really enticing is released that calls to me (rare) then I always have fresh experiences waiting in my library. It's probably cost a few thousand pounds over nearly twenty years and I feel that's a reasonable trade-off to have that facility.

It's not the result of frivolous spending or poor impulse control. It's a deliberate choice to min/max in a different direction. I too use IsThereAnyDeal and slowly hoover up titles that I've got my eye on. I rarely immediately play things I pick up!