The one thing that makes me always come back to osrs is skill capes alone. It took me 10 years to get a quest cape and I wear it proudly, it's the one thing I've always wanted. Now doing the diary cape is a pita.
I played Wow from start of BC to BFA, took break in panda land to BFa on and off. Classic is great but if you don't have your old buds/guild then it sucks. But if you get into a new guild that makes it worth it I can see being on that for a couple of years. OSRS always pulls me back though since there is so much to do.