Well, you could say the same about lots of other pub activities - quiz nights, football cup matches, pool tournaments, darts matches, discos - which might conflict with the interests of the drinking and pubbing fraternity. I keep away from pubs on the occasions when these things go on - though I used to play in a darts league years ago.

A session is no different - and it's actually a damned sight more sociable than a quiz night where, if you're a non-participant, you have to keep pretty silent or run the risk of being shushed. But better that these things go on in pubs and keep them alive and ticking than the pubs being shut.

And, if you've read the posts above, you'll discern that, on the whole, most landlords quite like sessions because they bring in drinkers, and lots of non-participants actually quite like the music.