No you are not, and yes you can.
Age only matters if you have a specific goal that takes more time to invest in than you have left. So, if all you want to do is explore someting, or get better, it's irrevlant.
Anyone can learn at least the basics about anything, and that includes being an artist. (yes there are excpetions, don't kill my hyperbolic buzz)
It's just a matter of how you want to spend your time; as an investment, or just for the enjoyment. Enjoyment being the largest factor in our later years (in my oppinion).
So, no excuses. Just decide whether you want to try something. If you do, do. If you don't, don't. But don't bring yourself down by thinking you can't learn new things. Learing is one of the great pleasures of life, and you don't need a reason or excuse to indulge in it.
Sorry. Pedantic mode off.