She can't help it, the girl can't help it

I understand what it means to love.
I love people everyday. All kinds of people.
People say a lot of things about love. One that i've heard a lot lately is that "love makes you do stupid things". I agree with this. I mean, ive been there (there being stupid). But im not so sure that i believe it to the extent that they are words to live by. How can you let "love" rule your world? Let you tell you what to do, and keep you from saying the things you want, or even ending what you thought may have been love? And why do people let love be all they have, to the point that they wouldn't be able to go on without that other person. Yes, i believe in love but i do not believe in not having self love. If i lost someone i loved - and i mean legitimately lost- i may think that i couldn't go on without that person, but its not true because you do go on, you have too. It would hurt for a while, maybe even forever but you have to go on. So why is it that people think that when they lose love - and not legitimately lose it- that they don't have anything else to live for. People lose love and they move on, so why is it that when love leaves you, you suddenly become nonexistent and unimportant?

To top it off - people shouldn't have to be scared to leave love if its what they want. Its not fair that because you don't feel the love that you once felt that you have to stick it out to save someone else.
Maybe im way off. Maybe what i thought was love really wasn't at all and i don't understand what other people are going through and i am completely insensitive and incorrect about these situations.
But i don't think so. I'm usually never wrong.