I can totally understand!! My DH and I had a lovely wedding, done on a VERY tight budget and although I know it's the marriage that counts, not the wedding day, and we did enjoy ourselves very much, I can't help but get a bit jealous of friends who have the huge white weddings with all the trimmings DH and I married in a courthouse ceremony, only immediate family present, and I was 5 months pg with DD1 so I couldn't have a beautiful gown (nor could we afford one lol). I want to have a big white wedding and renew our vows on our 5th wedding anniversary to 'make up for' our wedding, maybe you and your DH could look at doing something similar to give you the wedding you deserve, that you missed out on because of the bad weather?
Big hugs to you - I can definitely sympathise with how you feel. I don't think it's 'ungrateful' or wrong to feel bad that your wedding didn't go to plan, it's our special day, our fantasy, it should be everything we dream of!! xx