As a pilot who really enjoys flying in the back being looked after by helpful, friendly and mostly attractive (I don't dig the male attendants), and as a parent who is required occasionally to travel with two small children I can see both points of view here.
Aggression from pax is always inappropriate but walk a mile in his shoes, I don't know how long the flight was but a SYD-LHR trip with two toddlers in tow is as close as I have ever got to beating MY kids.
Agree wholehaertedly with the positive comments, and would offer this advice:
The passenger wants a SOLUTION to his problem, not an APOLOGY or indifference.
See you next time in economy (with the kids).
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Park it, tie it down, lock it, lets go to the pub!!!!!