I've got what I regard as pretty much the essential four electric guitars in my collection - A strat, Tele, Les Paul, and a 335 (well it's an Epiphone Sheraton but close enough). Some people would say I need an SG to complete the set but I've never been tempted. To me, they are just so damn ugly that I can't get beyond that. I think it's those two horns that just look so crude and inelegant. It's weird because I love the look of the Yamaha SG200 but that has much shorter horns. Despite having SG in its name I reckon the Yammy is more of a double-cutaway Les Paul than an SG. I suppose it also doesn't help that apart from Cream-era Clapton and Frank Zappa none of my heroes ever played an SG.
And yet...there must be something about them that I'm missing unless they are just bought by people in AC/DC cover bands. I just can't see what it is. There is a definite difference between a Strat and a tele because they both have their own distinct pickup designs and placement but an SG just seems to have the same pickup design and placement as a Les Paul on a cheaper, less elegant body, so what makes it desirable or different to a Les Paul? I'm guessing the thinner body contributes to it's brighter sounds but is there anything else? If you chose an SG over a Les Paul what was your reasoning? And if you own both what makes you pick up the SG to play rather than the Les Paul? There must be things about SG's that people love and I'm willing to be converted but It's going to be a struggle.
Good question. My limited understanding is the SG did arise out of cost cutting. As for sound and feel I have no knowledge and those, especially feel, are subjective.
Much to my surprise I am tele man, and it's just one of those things that's not right or wrong, it's just me, maybe that's the same with the SG.
The SG is super easy to play, and it has a great tone too. I think of it as the Telecaster of Gibsons, even though it has humbuckers. I might get one some day.