I use my folder ( folding bike that is ) to break up what would other wise be an 18 mile round trip to work. I'm not that fit and I popped a ligament in my ankle that now can't take that kind of punishment daily. I get in about 5 miles a day ( more if I go mad and have a little wander on the way home ) and although it won't necessarily take any weight off me, it does stop it going on. ( This becomes noticable when I stop riding for a few weeks!!)I totally recommend the seat with a slot in. It really takes the pressure off certain parts of your anatomy, which becomes very noticable on the bad roads of London.
Personally, I grew up in London and riding in traffic ( although I do avoid A roads ) dosen't bother me that much. But it isn't for the nervous. You end up putting yourself in danger if you lack confidence.
I've only ever cycled whilst on holiday twice. Both times with Parker. The first time was many years ago when we were both fit and the fact we were riding small tanks up big hills made no difference to us. The last time was the year before last. I, at least, cycle reasonably regularly, but the last time Parker had been on a bike was that first holiday. Ouch! The poor man. It took him two days to get over an 8 mile ride!
I like walking too. But I like to walk in very green places where it would be awkward to take a bike ( well, for me anyway ) and I've never been one to cycle up mountains. That way madness lies!!
TTFN M'Lady P.