The armed forces - why do people join up?

First up then, why do people in the UK join the armed forces?

Scouring the net I can see a variety of reasons for people in the UK joining up, chiefly as professed by people who have (who I figure should know), which I will list here in no particular order:

- Good pay
- Defending one's country/way of life
- Teaches respect
- Camaraderie
- Education/learn a trade/skills etc
- Good working hours (generally)
- Get fit (whilst getting paid)
- Very cheap living costs/more pay goes in your pocket
- Cheap adventure holidays (in your time-off)
- Exciting
- Adventure
- Get to use interesting kit
- Might get to kill people

Based on this, I can see why people join. Most of those things seem fairly sensible apart from the bloodlust bit.

Any more suggestions?