I know the best job I ever had was my 12 years as a U.S. Marine.
True, the pay was worse than abysmal, the conditions were hell, the docs were always sticking you with needles as you walked down the assembly line for your 13 shots, they always gassed us with stuff that made you choke, tear, and give you a runny nose that you'd not ever imagine, running you up and down hills/mountains on 30 mile hikes that were done at a near running pace, getting cut, bruised, and generally banged up, going to bed late, only to wake up before the sun- sore from the day before, but it is was more fun than anything I've ever done in my entire life.
I had the opportunity to travel around the world, making a difference, wherever we went, be it friend, foe, or even a hungry soul. I've seen things I definitely would not have seen otherwise, and experienced so many cultures, events, and marveled at the wonders of the world- first hand.
I've worked with my fellow Marines, and experienced the rare trust you have in your fellow Marine, knowing you can trust him with your life, as you'd do for him.
Not too many jobs in this world have the same demands, nor the same intangable rewards- which go well beyond what money and goods ever will.
These sorts of things are the type of stuff that remains with you for the rest of your life, which makes your life seem more full and meaningful.
Yup, definitely the best job ever!