I know how that feels. Both of my parents died back in 1978 (9 months apart). Sometimes talking about them makes me teary too. Both of my parents are buried in the City that I live in. However I have only been to my Mom's gave once, and that was back in the early 1990's, and I've never been to my Dad's. I don't feel a need to go.
I'm not a religious person, but I know that they aren't in the grave....their bones are, but that's not them. The essence of who they were is not there: it's inside me through my memories and feelings I hold them near to me everyday.
Their physical bodies are gone, but they aren't. You can reach out and touch them anytime you want just by remembering them with love, and I believe that somehow they know how you turned out in life and all that has gone on with you.