Hamburger are known for beeing a little rough but with big hearts at least thats what we Mainzer think about them.

The true prupose is a tough one to answer. There are not soo many studies about happines and I think happiness and purpose go hand in hand.

But I think growth is a big purpose in all our lifes. I know that is very general and you have o figur out in which area you want to grow for yourself.
There was also a study people seeing others grow increased their happines a lot. It doesnt have to be your children necessarily, even if you take somone under your wings and start mentoring him/her will have the same effect.
But enough rambling for now...

Great post makes me reflect a lot on myself.