Every other laptop I've ever had, the power connector was at the back so you could avoid hitting it with your leg. With the MBP, its on the side and it's small enough that my lap is wider than the laptop, so my leg pushes on the power connector.

Magsafe might be better than breaking a connector, but those aren't the only choices that exist. There is a far better solution, and it's really odd that Apple hasn't figured it out.