No--you did the right thing in posting. You clearly got something off your chest, and you should consider at least some of the feedback helpful in helping you to craft a second draft that can be sent to Delta. I think you've raised some important issues about the service quality you experienced on the flight that Delta should be made aware of. However, given the nature of this board (and most others on FT) you can't expect a 100% sympathetic response.

I echo some of the other posters here in that it feels you experienced a combination of crappy service and a crappy flight. Both were a result of things beyond your control (surly FA's and puking kid). You handled it the best you could. Some flights just kinda suck.