I don't mind the bargain airlines. Actually quite like Easyjet and have not had any issues. Sure they charge for luggage but they can be a very cheap way of getting somewhere. Recently we had a change of plans in Europe so I needed a couple of flights to meet up with a cruise. Two Flights, Two People, Two Bags for around $300. I take the inconvenience of cattle class for that.
We've been upgraded twice flying to Europe and it was sooooo nice but I would never pay for it out of my own pocket. It would be like someone offering to pay me $400 an hour to sit in coach and still drink for free...Hmmm OK.
We have friends who won't fly unless it's business class, it pains me to see what they pay for their flights for just a couple of hours but I guess everyone has different priorities.