I decided to give an auto a try because there are a few people out there saying they aren't as bad as people think. First go I yielded just shy of 1lb with two plants---banana kush by seedsman. Second was one plant 8oz. Real good smoke too. I have three now in their 5th wk of flower and its going to be a good month in March. You folks can rip my a@! all you want for saying this but the flavor, quality, and power of my first two I would match up to photos of the same type. I dropped a fan and broke off a main cola on one I have now and it never skipped a beat. Broke a branch damn near off on another with my LST skills taped it up with electric tape and it too bounced right back. Lollipopped them when buds appeared 35% off and did a pretty heavy defolation to open up top bud sites. I can't think of anything bad to say about autos. I probably got lucky with genetics. I have a good number of photo grows under my belt and have gotten efficient at this and do believe that also gave me a major leg up on someone relatively new. I'm also not out for quantity so that is not an issue but I will take my yields so far. I do know the ones I have grown are tough as hell.
I think people grow autos because they are faster for people who don't have perpetual grows or major resources. A decent tent, good light, ventilation, and the correct nutrient/watering schedule and I think a lot of people are growing some really good bud (guess you can say the same for photos...).