Most of you seem to be missing my point. I had a 90 minute delay on my journey into Atlanta: didn't disrupt my travel plans at all. On this later occasion, it did. Sometimes I have a lot going on, and if my plane is late, I miss something. It happens. I'm not going to slit my wrists. I'm not going to stop trying to get between tightly strung engagements just because I might be late.
More on my point: I had a delay out of EWR earlier in the year (don't recall the exact duration, but sam eorder of magnitude). It was weather. I didn't complain. CO automatically gave me some miles. If Delta has a similar program in place, I would just like to make sure I get the miles or whatever. If they don't, then I'm happy that I will be flying CO more than DL. It implies that CO thinks 90 minutes is a bigger deal than DL.
I would call myself an experienced flyer. Never actually counted up my miles, but for sure it's over 1 million, and six continents.