I guess I'm in the minority here. The first NFL game in China will be a historic moment. That's pretty cool. I have no problem with the Rams being part of it, and if I was a player, I'd love to play in that game. Sure, the NFL probably has no hope over building their brand there. So if the NFL is looking to expand I think they're biting off more than they can chew. But what's wrong with doing something just because it's fun?
As long as it isn't an important home game we are giving up - e.g. home opener, a game close to the end of the season, a game vs a team rival or "big name" franchise, etc - I'm definitely fine with the Rams being selected for this game.
I think jet lag is far over-blown. I've travelled to Asia before. The jet lag goes away in far, far less than a week. The boys should be fine the following Sunday. That is, assuming they even play the following Sunday, and the NFL does not schedule a bye week after the China trip. Blaming jet lag for a loss the following week would be a poor excuse IMO.