As an ex-Christian and survivor of childhood abuse, I share your sentiments about not needing God in your life. He serves absolutely no purpose in my life either, and I know that I'm much better off without him. I firmly believe this because of all the years of abuse, neglect, bullying, and harassment I experienced growing up. I've had to deal with PTSD for years as an adult because of all the trauma and violence I endured while growing up I survived 12 years of constant bullying and harassment at school and 13 and a half years of abuse and neglect at home. I genuinely believed in God in the midst of all the abuse and bullying I suffered. I would fervently pray to God, begging him to save and protect me, but despite all my desperate cries to him, I was still subjected to years of abuse, neglect, bullying, and harassment until I was 18 and left home.
I now identify as a polytheist and Wiccan, but I don't allow my spiritual beliefs to control how I live. I don't bow down to any of the gods out of fear of incurring their wrath and being condemned to eternal torment in hell because I "sinned" against them and didn't grovel at their feet to confess my transgressions against them and beg for their forgiveness. I don't feel pressured to worship a particular god or goddess, nor do I feel pressured to always live morally upright in order to placate a very vengeful and jealous God who threatens to damn me to hell and torment me for all eternity if I don't ask for his forgiveness and follow his rules. I don't feel intimidated by any deities, nor do I fear the wrath of any deities. I don't rely on any god to take care of my health, the health of my loved ones and friends, or to keep my family and I safe from harm. I don't ask any gods for anything, nor do I ask them to watch over me or take care of my needs. I can look after myself and my family without the help of any gods. In truth, I keep these gods and my religious convictions at arm's length.