I had premium for like 4 years (mostly bc of me taking advantage of the buy-one-get-one-free offers they were doing lmao) & when it finally ran out it was like. The only things I really missed were the ability to make polls & not having adverts everywhere. Hence I decided it wasn't worth the money even before they p much doubled the price
I used to have Core Membership, but since I started a Donation Pool, most of the Points that were given to me were spent entirely on obtaining one-month Membership. I liked some of the features-especially being able to see who's visited your page and such-but I didn't use many others. It'd be nice to have it again, but I haven't been feeling up to starting another Pool, especially since Memberships are even more expensive now.
I've had premium/core for 4 years now, and I won't go back. I've made a few regular accounts that aren't subscribed, and it's irritating not being able to browse effectively (120 deviations per page), not being able to customize my gallery/front page and not being able to use widgets/polls. I get that it's expensive, but $50 for 12 months isn't that big of a deal - compare it to a $75 monthly phone bill i mean XD Besides, the only time I renew my membership is around christmas when dA does the "buy 1 get 1 free", so it's 2 years worth of membership for $50 (score)
I've had on for the past 7 years I've been on dA through all of my accounts, I don't think I'd be able to function well without one because I've forgotten how dA is without one, it would take a lot of time and adjustment. DeviantART is my home, I don't mind occasionally paying rent.
I originally wanted to get a premium membership because I was sick and tired of all the ads with sound since they kept giving me minor heart-attacks. Then my sister showed me a free ad blocker and I decided against getting a premium membership (that and I couldn't afford it anyway).
When I didn't have premium/core, I was ok and I easily got used to some things which were for members only. Now, I can't live without it! Custom boxes, subfolders, polls... I love to use them. I can't imagine myself after my premium/core expires, so I'm gonna extend it any time. The only thing that is worrying me are the prices