Hi, I just divorced with my ex-hubby. I sponsored his PR since he was still a student at that time. He still holds his PR now. So this may not be an issue for you. You can still maintain your identity. If you are not older than 35 yrs like me, you'll have to sell your HDB house. It's the law no matter you can keep your PR or not.
But anyway consider it carefully before divorcing. If you care each other, try to communicate more. Good luck.