I have a handfull of 10gal kegs but never use them (except as fermentors). I might use a 5 gal keg if/when I finally pick one or two up. I love bottling my beer because 75% of what I make is belgian, and half of that is saison. I like my saisons at 3.5-4 volumes and that's EASY to do with bottles. I guess it could be done with a keg but I also do a lot of more interesting brett beers. I equally would rather bottle them. I don't want to need 20 kegs because I brew something that I'd like to age. Kegging is great if you brew all "consume now" types of beers. However when I brew a sour I'd rather just clean and package in bottles so I can have 2-3 cases of it for long term consumption. I tend to think that if someone is having such a tough time bottling they're doing something very wrong. Spend the $40 get a bottling tree with a vinator and make your life easy.
Also while Sierra Nevada and Bells both keg, their bottles are all bottle conditioned too. If a brewery can do it bottle conditioning saves money for breweries by decreasing CO2 use.
Plus how cool is it to pop the cork on a 9L bottle of saison for a party?