I don't know of any Christian sect that rejects the Old Testament. Early Christians understood that unless they bridge the New Testament with the Old they couldn't claim there was a new covenant. A Christian can not ignore the OT but they pick and choose the parts of it they like and ignore the rest and understandably so. The rest is bat-shit crazy for someone in 2016. There are death sentences for a number of minor infractions. I can't imagine they were applied to the letter but it is in the OT.Not my religion.
Fortunately for me in my high school year of high school the focus was entirely on the OT. I enjoyed it cuz it had awesome stories about battles, banging chicks, and people with super human powers but it was also shockingly sadistic and arbitrary. God is kinda of an asshole and has some real insecurity issues. At least in the OT anyway. God appears to have chilled out.I think I could have been defined as an atheist for a short time of my life, maybe part of the time when I was in a highschool if I remember correctly. But, I was drawn to Christianity and over the years my connection just grew stronger. Obviously nobody can severe my bond with it just like that, with a few words. What you see a self deception I see years of growing wisdom.