Re: Frack Bicycle Hub Gears and any gear change at the hub, always a really stupid idea!
Do you have some specific alternative in mind? Something in the bottom bracket? Part of a shaft drive? Or just a general wish for something better?
I ask because I think one of the reasons I've hardly ever ridden my bike is that it turns out I *hate* derailers, so if I was to buy an alternative my inclination would be towards hub gears - not that I've much experience of those either (my previous bike was a BMX as a kid), but vaguely recall them being much nicer from having a go on a mate's Grifter.
I'm not sure I'm too worried about punctures being a hassle, they would be anyway for me (fixing the last one involved whinging "Dad....!" about quarter of a century ago). Similarly changing rims - I can't think why I'd do that other than a crash bad enough to bend a wheel, in which case I've got bigger things to worry about than the labour cost of getting someone to rebuild the wheel.