I'm just an ME student, so I can't tell you for sure what the job would be like, but I will warn you that you better be ready for alot of upper level calculus, alot of matrix algebra and vector calc, differential equations, after that you get into the more interesting stuff. Materials science, alot of thermodynamics, fluid dynamics can get kind of hard at times but not too bad, statics isn't too bad, deformable bodies is pretty tough, and some of the circuits stuff gets kind of hard
Now for the positive side, if you do go ME get involved in your school's chapter of ASME (American Society of Mechanical Engineers) its definitely worth it, if you have a 3.0 gpa they have some pretty good scholarships, they have low interest student loans, you can participate in the student design contest which is alot of fun, and it looks pretty good on a resume
One great thing about engineering is that you don't write alot of papers, but the papers you do write are all technical papers, not too bad once you catch onto them, but you should definately expect to pull some late nights
Overall I would definitely recommend going ME