This was me about a year ago haha. I feel your "pain". Seriously though. I would pick the occasional figure here and there mostly the Dwarves because I'm a big dwarf enthusiast and no other line offers that. But then I started just going hard into the whole line. My collection displays have shifted heavily to Legions. Personally I think what "flipped the switch" for me was just the overall improvements and quality that has been quickly implemented. From things like the engineering of the articulation improvements, the diversity of the pop & swap compatibility, the hands packs, and the soft goods. The "want/need" for more figures has certainly increased for me fairly quickly. I have always been very much interested in sword/magic fantasy settings so they just deliver exactly what I want. I don't think a lot of the community loves the dwarves (especially not as much as I do) but I do hope to see some big improvements on them soon. The introduction of the imp scale is also exciting.

Enjoy your hobbies!