like a child at times.
You call me your baby.
You love me and hate me for what my body does.
Sometimes you get frustrated with me.
On occasion i need check-ups. More-so later on.
You "invest" alot of money in me and my needs.
I'm not like any other of my kind, but we're all so alike.
I have my problems, but so do you.
Well, what am I?