I'm 44 and passed my test 10 days ago , but I wish I'd done it years ago, I was in the same boat as you, always wanted to do it, but never got round to it,
But now I'm in the same boat as Dazthenewbie and Danster, I've got a big 600cc bike in my garden and I ride it every spare minute I get .
Again, the same as Dazthenewbie, it cost me a few quid, but it's well worth it, believe me there is no feeling like getting your clobber on, putting the key in the ignition and pressing the magic button , and then the ride? well it's just out of this world.
Like you it was something I'd always wanted to do but never got round to.
If you have the urge/need to pass your test and get a big bike only one thing will fulfil that need,and you know what it is,
the urge may subside after a while....but you can bet your bollox it will be back even stronger......so the only logical answer is..... as others have said..........
Just do it.......do it for yourself.....I did.
no one else in my family likes bikes, wife, kids, parents.... but thats ok because I did it for me
to coin a phrase......you know it makes sense....