Why am i obsessed with my husband's past? Is it normal to compare past marriages with ours?

I have been married to my husband for over 2 years. We have 2 small, beautiful children. He had been married twice and this is his third marriage and second marriage for me. I was cleaning out boxes and I found old receipts, tax forms, pictures, etc...I can't help but get mad that he's been everywhere with his ex spouses all over the world but then he couldn't take me anywhere for a honeymoon. They had nice weddings in the Caribbean and we got married at the courthouse with just the 2 of us..Am I making a big deal? Don't I deserve that too? I talked to him about this before and obviously it still bothers me. He said that I didn't want a nice wedding so he just went with what I want. That's even before I saw the old pictures...From time to time, this bothers me..I just feel like he doesn't give me what I deserve and I know I deserve more. I am a good wife and I am a good mother to our kids..Is it just insecurity? I just need to feel that I am important too and I deserve the good things in life.