I switched recently. Bottled about 55 5 gallon batches first. I am happy with decision to move to kegs but here are a few considerations.
1. Cost is more than you think it will be or that most people here will admit to. I am probably close to $1,000 at this point with 5 kegs, a chest freezer, a beginner CO2 system using picnic taps to serve from 2 kegs and carb 4 kegs at at time. Also got a keg washer, ratchets, beer and gas line, lube, extra gaskets, I dont know all I bought but it adds up.
2. Beer goes really fast in kegs. I am working hard to get my pipeline caught up so I can stop forcecarbing and drinking green beer. I am hoping to get some of these kegs filled and let them age in the keg for 4-6 weeks before tapping. Maybe need to invest in some smaller beer glasses too.
3. Bottling day is in fact crazy easy. Even better is not having empties piling up all over the place that need to be cleaned and stored.
4. Growler filling for sharing with friends is the way to go. A growler is good for several days if not opened and then about 24 hours. I put a bottle filling wand in my picnic tap to fill the growler. I imagine I will fill some bottles for competitions that way but havent tried yet.
5. I said this is expensive right...Good luck with trying to save cost buying all this stuff on CL. I watched that off and on for months and in my area just doesnt happen. Also be prepared to pay though the nose for kegs.