We have had both and when we were looking for our current coach it was not a "major" decision or a deal breaker either way, it was something I merely jotted down on the wants list as curb side dinette. I preferred the curb side so we could look out at our site. Wife didn't have a preference.
When we found our "perfect used coach", it had the street side dinette which still didn't mean too much but I commented on it to the wife because I had jotted it down on paper.
Now after seven years of owning this coach with the dinette on the street side, I can say it hasn't really made a difference to me. The wife however, likes the street side and the kitchen on the curb side. She informed me because when she is cooking she likes to look out into our site and see her family and feel closer to the conversation. When we are eating we are all inside and sitting together anyway.