The generation gap

OMG I am SO not in my 30s!! There is such a generation gap between them and me. I get caught in the middle because I had my second "set" of kids in my 40s, so now I am surrounded by 30-something first time moms that are SO ANNOYING!! Maybe it's the "first kid" syndrome they have, I don't know. But they just act so entitled. For example, this morning was the first swim lesson for my 6 year old son at the community pool. So I show up early and walk over to the only neighbor I know - and again, get no acknowledgement from her that I exist. I don't even get a chance to get in a quick "hi" because she never stops talking to EVERYONE else at the pool - even waving to others on the other side. Okay....so I get live without that. No problem. Her daughter's class is finished, so she leaves and I gather with the other moms from the class. Well, actually, they gather. They all pull up chairs right next to the pool edge (which we were told not to do) and take pictures of their baby in the water, blah, blah, blah. A little overkill, I think, since the class hasn't even started. The moms waiting for the next class push their overloaded strollers into the baby pool enclosure and they all let their kids in the pool. Now, we all know the pool isn't open to the public at this early hour of the morning, so I wonder why they feel exempt from this rule while I keep my younger son out. I feel a little vindicated when the lifeguard does come over 5 minutes later and tells them to get out, but still....the whole attitude of "I'll do what I want until I'm told not to" just doesn't sit well with me.
Sometimes I feel bad I don't "gel" well with my neighbors, but then this kind of thing happens again and I understand myself and just figure that's the way it is going to be now that I'm an older mom. I just don't understand this younger generation :) lol