A lot of posters hated the suit and didn't like the way the trunks looked, they didn't like how low on Routh's hips they were. I didn't have any huge issues with the suit I just didn't like the film. Well I did think the cape looked too much like a Fruit Rollup but that's about it.
I don't think trunks are horrible I just prefer suits without them. Also I don't think it would make any sense for Batman to have trunks when Supes doesn't.[/QUOTE]
I really don't think that matters. Supes gets his fashion style from another planet, Batman isn't modeling his outfit on Kryptonian styles.
I really don't care either way on the trunks, but I think they could easily be made to look fine in live action.
If Supes doesn't need trunks because his suit is based on alien fashions, what rational would Batman have for his suit having trunks? Hypothetically, what would he have pulled inspiration from? Professional wrestling? I mean honestly, like I've said in the past as well, I don't really care either way myself, but I enjoy reading the fans' reasoning. Edit that: I do prefer seeing no trunks on the Batman suit in the next movie, but wouldn't be upset in the least if they made trunks work.