Having kids develops a certain natural selflessness in (most) people. You truly work for someone else's happiness in life and feel a great feeling of enrichment for doing so.
Experiencing the park through your children bolsters this natural instinct and will have you enjoying the park like you never have before. Especially when the Disney magic kicks in..
We waited too long to take my son to the park, mostly because we were afraid he would be scared or the rides (boy was I wrong). The first time we stood in line to enter the park it was foggy and cool morning. We were dressed for what would be a warm day but we were a bit cold at the moment. All at once the sun burned through haze and Jiminy Cricket came over the audio system in Sunshine plaza singing When you wish upon a star. The sun warmed us as the music swept us away to a completely new mood.
That moment I saw a look on his 10 year old face that I'd never seen before. As he looked all around and the line started ushering us towards the gates, it finally came to me what he was experiencing; he was in complete and total awe.
This is the kind of thing you can only experience with children.