Must be quite tempting to tell people to F off?
I think if you can't put your sink waste trap back together, you really should be doing, well, any DIY.
Yeah, it's a bit of a different world up here (North Wales, our 46 square mile community has a population of 600) , so people certainly look after eachother. That said, it must drive you nuts that amateurs (like myself) want bailing out on the cheap...
Thing is some things are easy aren't they. The trick, as others have mentioned is to kow your limits. I'm happy working with timber, I've built 2 big raised decks in our garden, no issue at all (probably completely over engineered!) built my own 7m x 6m shed etc. Even about to rebuild my barn...