Met first proper girlfriend (2 years) on a clubbing forum.
Met next gf (2 years) on a different clubbing forum.
Next through a friend, she screwed me over after 6 months.
Next through PoF, together for 5 years, bought a flat, got a cat, but sadly realised she wasn't the right one for me.
Next through OkCupid, got married after 4 years, been together for 7, have a house, and even more cats.
There is ZERO chance I would have randomly met my wife as we went about in completely different circles (mainly by way of music taste), so I wouldn't poo-poo dating sites.
Though the swipey ones a bit crapper as no effort is put in.