I think about this sometimes. I think it depends on how you see hip-hop.
I see it as an extension of poetry and contemporary music. Thing is, all the pioneers of hip-hop are still pretty much alive and a lot of them still make music. Rock, Jazz, Pop, Folk, Classical music has been around for a lot longer.
People of older ages can enjoy those types of music because it was what was going on at the time for them and it's pretty easy listening. Hip-hop can be controvertible, extreme, intense, taboo. Music has become quite complex and abstract and noisy, maybe even socially uncomfortable.
I'd be happy to make my first rap album when I'm 30 but its like Ras Kass said, does the hip-hope core audience even exist? Would anyone be ready to hear a 30 year old man make a rap album? I really have no idea. I don't know whether it matters if you heard that kid grow up on albums or not. Obviously, not everyone can do it that way.
Just put your best out, put it out for free, I need to take my ow advice on that one. Good luck, sorry for the essay. lol