Not alone but feeling alone, Regret
I didn't exactly go through this...I was pretty much ecstatic the whole time. My regret didn't happen until much further down the road...like now.
My life didn't magically become better with the weight loss. I still have lupus and fibro, although it has become easier to cope with, since other medicines work better now at keeping flares at bay.
Mine was a benefits vs, risks decision, and there have been some health benefits, but my social life still sucks.