A smaller collection is better actually. Easier to maintain, easier to absorb and appreciate, easier on the jokes from your friends and family.
In the end, buying 2-4 InArt figures a year is the same as buying 4-8 HT a year... and we all know you and many others buy more than 4-8 HT figures a year. So InArt is actually saving you money!!! It's a Christmas miracle!
I've thought about the whole "Quality over Quantity" many, many times, over the years and have followed that plan "mostly".
What makes things difficult is when you have several different lines being collected and/or a huge one like Star Wars. I've managed to skip quite a number of figures that other Star Wars fans would call me crazy for doing so... (Snowspeeder Luke and the ROTJ Scout Trooper set, just to name two!).
Now throw into the mix those occasional unexpected or one-off figures ("Mad Max" Wez and DX15 Jack Sparrow, for example) and it gets even more difficult to pass on. I'm a sucker for figures from 1980's films, too.
Finally, the constant nemesis of our hobby, the eventual upgrading of figures, has been chipping away at my enjoyment, as well. It is fine when it is just for a few special or project figures, such as the "Raiders" Indy but when it is a regularly released figure as a 2.0, 3.0, etc., it gets frustrating very fast.
While some would be fine with, for example, just a Gandalf the Gray and perhaps Frodo from InArt, I would be going crazy if I couldn't complete at least the Fellowship Nine. That's the slippery slope. "9" InArt Figures (if they were to do the nine) would be super-expensive.
I get back to saying that I know that I'm sliding into home plate, as far as my 1/6 scale collecting days go. Another eventual purge is in the horizon but it is always a difficult decision, as I'm a picky purchaser to begin with.
Well, I don't want to derail this thread any further. I'm definitely in for the new InArt Aragorn figure!