Since my sons were born, I enjoyed playing with my old vintage toys with them. There came a point around 2008 when I was wishing for articulated versions - so much more fun! And then, by happy coincidence, it happened.
I've cherry picked since Beastman 2008 & never held a sub. I'm not a completist & refused to buy into that. As a boy, my interest in MOTU was slowly waning when the Horde came out and was going even moreso when the Snake-Men were made. I never bothered with the last wave of figures (e.g. Extendar, Squeeeze etc.).
Now that most of the figures I had a nostalgic connection with are done, there's little left to buy. I'm looking forward to Mantenna, but moreso Ram-Man, Jitsu, (& hopefully Dragstor & Modulock).
I did get a few "non-nostalgic" characters, like Marzo (& soon Shokoti), because I enjoyed the Filmation & 200x toons, but not enough to get lots of them, especially the likes of the Griffon.
The other main reason for my personal slow-down (reflected in my now minimal participation at the .Org) is that I got bored. The shared-parts makes an, even medium sized, collection look very uniform. I no longer feel the pleasure I used to, seeing them all on the shelf - so I've taken them down. Though I might have bought a Castle a few years ago, I'm just not that bothered now.
The "blastic" decision was really awful, but thankfully didn't affect anything I wanted. Some design choices put me off buying some figures too, like the goofy headed Clawful & blunt Spikor.
That said, I've never had a QC problem.
Furthermore, the bios are awful & the comics are mostly pretty bad, story-wise. The best art-work I see is fan based. So there's nothing there to engage my mind or aesthetic tastes.
Once I've got my hand-full of remaining favourites, I'll be putting my money into the Star Wars "Black Line".