I bought my first DH bike at the age of 44. Nothing, and I repeat nothing, gives the same sense of invincibility as a slack-angled, sticky-tyred DH bike when you’re nailing it down a muddy chute or a rooty, off-camber decent.
The bike’s waaaay better than me, but then I don’t care. It’s the best tool I’ve used for the Alps by a truly massive margin, and for all the people who yell “skills compensator”, I absolutely agree. I’m crap at DH, but I’m a lot better with a DH bike than without it.
So buy one. You’ll love it, so long as it’s pointed downhill. They’re not even that expensive for something half-way decent and barely-used.