do it, mate, get your licence and go somewhere.
if you love it, if motorcycling's in your blood and heart then you'll know, and you'll want to do it forever.
if it's not in you, you'll know that too after a few rides, and guess what the answer is then?
others' opinions have no bearing on this. it's you, yours. if they want to share it, great. if they want to can it without knowing what it's about, different story.
one more thing: if it is in you, if you're a motorcyclist, then ride every time like you want to ride when you're seventy.
keep it upright! (except when cornering...)
andy.