Did 135mph on mine, with a pillion too, and the bike definitely had more to give, but some selfish car driver changed lanes about a third of a mile ahead, so i shut off the throttle.
Thing is, it ain't much fun to be honest, unless the elements are totally in your favour.
Your head and body get bashed about, and the risk is phenomenal, so i can say that i've been there done that but feel no real urge to do it again.
But it DOES need to be done, even if it's just the one experience.
The pillion rider tends to suffer far more serious injuries, in a motorcycle accident, fact!
At 135mph you eliminated the possibility that your pillion would come out with any injuries at all, as they'd be dead (there's alot that could happen outside of your control, speed wobble, tyre blows out, animal runs into the road, another vehicle changes lane or enters the carriageway, etc)...
Next time you feel the urge "it has to be done... to get the tshirt" perhaps look back, to make sure you arent carrying a pillion first!? 
The pillion knew exactly what was about to happen, and me, along with everyone else, risk our lives as soon as you get on a bike and start riding on the road.
Similar to people who find the urge to parachute out of planes, now you wouldn't get me doing that ever, because my mind tells me that it's very dangerous and the risk assessment is much higher 'cos if your parachute(s) fail you're totally fooked, but people still do it, just to get a buzz out of it.
If my bike was bigger then maybe i'd have gone faster, who knows, or worse still, i could've been hit whilst 'speeding' by some poor bloke who's parachute had failed? That would make a good story, albeit an unlucky one for all involved.
