I too felt like I wanted a job that allowed me to do a lot of business travel but I decided to go with something I wanted to do and would not be traveling every month, Aerospace Engineering.

So that is what I thought, I am currently on the road at minimum of 1 week a month upwards of 3 weeks.

I guess what I am saying is that IMO practically every job has the opportunity of business travel. Do something that you would enjoy doing.