Same here. The sense of relief is just so freeing. He said that "being married to you was killing me, and might have done so literally." No, it was his severe MH issues that were killing him, and he always needed someone to blame for them. Nobody else in my entire life has ever, ever had such a deeply, ridiculously, over-the-top intense negative reaction to me - and this is after a couple of years of him love-bombing me and telling me that I'm the best thing since sliced bread! Then he changed once married, and I became the fount of all evil to him.
So yes, I lived with that same sense of rejection. He made it very clear that he had no interest in anything I had to say or in interacting with me. Not all the time, of course, it would wax and wane, as that's how abusers keep you around. He'd be lovely sometimes and I would think our marriage had hope. But for the last third of our marriage, it was pretty much all the time. Every thing I was, everything I said, everything I did, or didn't do, was grist to his mill.
To my great surprise, the three men I dated after him seemed delighted to be with me. I know EXACTLY what you mean about being glad not to live with rejection anymore. But I think I'm going to struggle a bit with believing that anyone truly likes me. After all, my husband knew me extremely well, and he thought I was awful, even though I was always nice to him. (Wouldn't have dared be anything else, tbh.)
But yes, being free of someone else's constant and complete lack of care towards you is really wonderful.