50/50 is not enough

for a long time i thought a "50/50" love was what i wanted but i continued to meet disappointment and failure, something was missing and i didn't know what it was. i sat down and finally understood that i can't possibly achieve anything successful in life only giving half my effort so why should i only give half in a relationship? you never see a runner win a race only putting out 50%, you will never get to your destination driving 50% of the way, so why is it in relationships we want to have a  full blown 100% success rate but only giving 50% from each person? it doesn't add up. in life we cannot expect to invest half our effort and get a 100% return, it doesn't make sense. if you are in a relationship and you are both only giving 50% or "meeting in the middle" guess what, you are both bullshitting and will never gain full happiness. you cannot stop yourself from getting hurt by unworthy people you cross in life but even in failure at least you can say you gave your all, that eliminates the "was it me" question in the end. just my 2 cents