The Facts + Chances We Take
1. You get what you pay for. Allegiant saves a ton of money by moving counter agents out to the ramp to load the luggage and other tasks. Those savings translate into lower fares.
2. Allegiant recomends arrival at the airport 2 hours before scheduled departure. Few people other than kettles do that anymore on purpose, but it's a risk we all take. I know that I can leave my office 60 minutes before scheduled departure on the USS xDCA and be onboard and settled in well before departure. But, it's my risk and the couple of times that circumstances have combined to make me late, I'm delayed an hour until the next flight. I wouldn't do this on a 3x/weekly TPAC.
3. People make choices. I don't like the entire Allegiant concept, but there are apparently enough folks out there who do to keep it flying. This is America and it's just fine with me that others travel differently than I do. It's not for me to criticize their travel (and spending) habits any more than I ought to criticize someone who chooses McDonald's over a 4-star restaurant.