I felt the same way becoming an atheist. Once you take control of your life, doors open. But, over the years I've come to question maybe that's really what God intended life to be, and it's humans who have muddled the intent. Paul's teachings were exactly as you are describing is how Christianity should be.
Scriptures convict and set free is some folks interpretation. I never got it then, but it makes more sense now...
There is some truth taught in scripture, but I believe much of it is contradicting and paints God as possibly jealous to the point of being evil and without mercy. My definition of love has evolved into what I know is love through relationships I've had, and God does not demonstrate that love today, so I question scripture as being true, or possibly just wrong and not what God intended. Love is bigger than a single act, no matter the act. If you love someone today, you love them and plan to love them, not just yesterday. Otherwise, it could be said, you loved them yesterday.
I really don't know how anyone can take it as valid, with more than what the overall theme of alturism , as good or righteous or true.