What is funny to me is I see people that didn't grow up watching the Transformers cartoons saying they liked the movies because it had lots of robots and explosions and they don't have old memories to cloud their judgement.
Now, I admit I do suffer from a bit of nostalgia when it comes to the Transformers, but if there's one arguement that I don't buy is that there were lots of robots. The first movie spends too much time trying to be funny, such as the 10 minute long scene in Sam's bedroom where the parents make awkward jokes in front of his new girlfriend. No robots and no explosions.
Now I do admit that when the robots were on the screen there were usually explosions, but the robots never really interact that much (other than shooting each other) and you don't get any personality from them. I don't want to know how Sam feels about his girlfriend. I want to hear the Autobots chatting it up or the hear the Decepticons arguing more with each other. If you're going to stop the action to hear about Sam's feelings, I'd much rather hear the Autobots joking with each other or Starscream kissing butt in one sentence and scheming in the next.
Yes, I told you I suffer from a bit of nostalgia. But I don't think it's too much to ask for more robots than humans, even when there's less action going on. Give the robots some personality -- and not the stereotyped "I've got a gold tooth and I talk with ebonics" personality from the second movie.
But the bottom line is more humans = less CGI = lower cost. So unless James Cameron will be doing the next Transformers movie, we'll continue to see a whole lot of Sam crammed in between some robots and explosions.