I would never ask people what I should like. I know what I like, and the feedback from someone else shouldn't be a factor there. If you like Jay-Z's current music and talent, then of course you should like him. If you think he's faded a bit and past his glory days, well, you still have the memory of those amazing past performances. But however you feel, don't let other people decide it for you.
People grow up and their tastes change, that is not to say Jay-Z is not as good as he was when you were younger, or that he was ever bad, just that you have found different music that is more suitable for your new found tastes. If you do not like his music anymore, nothing wrong with that.