Yes - I agree and feel the same way. Many of Bowie's contemporary's (age-wise) just haven't been able to maintain any relevance in their later years. I love the Stones for example, but - I haven't bought an album since I was a kid. Bowie has been doing his thing for 45 years!!! Maybe not to everyone's taste but he doesn't try to be Justin Bieber either.
I was a big Zep/Sabbath fan as a kid - but I don't think I could stand to watch Ozzy on stage anymore.
But I could go see Bowie - not that he does any concerts anymore.