Friendship: Need versus Want.

Your friends are not necessarily those you say hi to everyday. 

Those you don't say hi to everyday not not friends. 

Want versus need. 

Are friends those you need in your life or those you want in your life?? 

Which is healthier or better?? Or are they on the same spectrum just at different ends?? 

I have friends I think I need. It hurts when it doesn't feel reciprocated. 

I have friends I think I want. It hurts when it doesn't feel reciprocated. 

So if you need but are not needed but wanted. If you want but aren't wanted but needed. Does it hurt less than when you are just not needed or wanted period?? 

I really want someone to explain how friendship on this side works.