Answer:
I belong to you but others use me more often than you do
When it comes to me you go on red and stop on green.
Some will use me, others not. Some have remembered, others forgot. For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. What am I?
I am the minerals vital for your good health.
What is so delicate that saying its name breaks it?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.