Just yesterday I was feeling jealous that a friend posted on facebook he has locked in a contract with the Tonga tourism board and is currently sailing his yatch to Tonga to start the contract. After sailing to New Zealand for the Hobbit premier. I met this guy wiring up financial web services between banking mainframes in Singapore and some reporting companies. Not exactly what I'd call scummy side of the internet.. unless you have a very low opinion of financial traders LOL.
Once while on a diving boat in the Red Sea I was chatting talking to the others divers before our next dive and it turned out 3 out around 7 of us where free lancer software developers. I have been told by people that Britain does have an unusaly high work from home rate for IT workers (never verified that statement though).
As for rich though... I used to get paid a hell of a lot, but in all reality I burnt a hell of a lot of cash really quick. I think the aforementioned diving trip was £2000 for 8 days for example. And there was a lot of down time as well. I had some contracts that took over a year to finalise.
Loneliness was never an issue either. I was doing all this around the age of 25, and particularly working in London you could literally waltz down to a pub, use the free wifi and chat to the locals. If you choose a decent pub the culture there is amazing and the local bar flies will introduce you to every person in the neighborhood.
The only time I ever suffer from loneliness was living in Northern Ireland, anyone that knows the history of NI can piece together why that place can be a harsh on strangers.