I don't have the time or inclination to collect games I have no intention on playing, lest they hold some novel significance or special meaning to me.
I do pretty much the same thing.

I have games for the Genesis (CD, 32x), SNES, PS1, Saturn, PS2, PS3, Wii, GBA, DS, 3DS, PSP and Vita. However I only have about 10 games on average with 30 being a high limit for each individual platform. I won't buy a console unless I am interested in at least 10 games for it, regardless of the generation. It works well because I keep from feeling overwhelmed by having a huge collection I'll never play and enjoy titles from the past along with the new offerings today. The only thing I do splurge on are the new titles being released for the "dead" consoles, I'll pick almost any of those if its for a system that I enjoy.

I've just seen some people on here say things like "I don't buy any games that came out after the original PlayStation.", and it's those types of people whose input I'm looking for.
If that's the case then its sound like you just want to reinforce a decision you've already made since those who feel that way are really only going to have one stance on this. I think is a bit of a silly since regardless of the console generation there are plenty of good games to play. However if you feel that modern consoles temp you too much to resist then sell them and collect only SNES games until you have your complete collection.