Indeed I did ask, and many thanks for the responses. Must say, the almost-universal negativity here and in more passive internet searches came as quite a revelation. Oddly, I've only met two blokes over the years who (admitted to having) had vasectomies both had horror stories - one of persistent pain, one of an unwanted pregnancy. I thought I might see a more balanced set of anecdotes once I started looking, but not really. My motivation is to contribute in some way to the contraception project, having run the full gamut of options over the years and found the whole business hideously tiresome, condoms in particular being a monumental drag (very un-PC, I know). I confess I hadn't thought of the coil (seems very 70's), but TBH I wanted to spare my partner yet more interference with her nethers, after decades of pills and other unmentionables, and now a clutch of babies... I'll keep researching for a while, because clearly someone is seeing the upside: apparently more than 15% of American men over 35 have had this op, and if I was to go on a public waiting list here by the time I got done I'd probably need Viagra to produce the necessary samples.