What's wrong with being satisfied with only the most? If I could live forever I would be extra EXTRA careful about how safe I am, because a truck would still be fatal. I would get to work right away on painting, drawing, piano, guitar and drums. I would go see more of the world than I haven't already. Go to college when I get around to it, go skydiving, bullriding, programming, architecture... I would DEFINITELY go into theoretical physics and philosophy. I got longer to think about things than most people. My stress level would hit zero, what do I have to worry about (except trucks and falling anvils)? I wouldn't be worried about my heath so much i.e. eat McDonald's everyday. But not that, whatever I wanted. Hey, if I have a heartattack, it will be unpleasant but I won't die! Wouldn't worry much about social consequences, there will always be more friends along the way.
Really indulge, oh yes indulge. Maybe take up hacking or being a professional thief? Eh? Of course only do that to the government, they won't kill you. If I go to jail, I haven't lost 20 years of my life! Well yes I have, but not like its a large fraction. In jail I'd do a lot of reading, a lot of scheming, a lot of exercising. After I get out, I'll take it easy for 50 years, then I'll go back to doing fun things
Would I go insane ever? From what? I would love to see all the great accomplishments of people over the next few hundreds of years. I'd stay out of anything dangerous such as a war, because I don't want to die!
I wouldn't care what people think of me because after they forget me or die, they're gone!
Ha ha! Foolish mortals! Suckers!
Oh yes I'd probably have lots and lots of sex. Don't worry about STDs or AIDS or anything! I'm immortal! I assume this comes with a get well from any disease feature. Hey, if it doesn't there will be a cure for AIDs soon enough!