Frontier is not all that bad. If the flight schedule works for you, I would book it. It sounds like you travel light and don't care where you sit. Are you traveling with someone else or alone? If you are alone or don't care if you sit by your travel partner or not, you don't need to pay for a seat selection. One will be assigned to you when you check in for free. Just be aware you could get a middle seat in the back of the plane. If this doesn't bother you, great! Otherwise, consider paying the extra money to secure your preference.

There is no fighting over seats when boarding. Everyone is assigned a seat when they check in, and during boarding they go to their seat and sit down. No mess, no stress. Very easy.

Some of the bigger airlines have wifi and in-flight entertainment. On Frontier there is none, so be sure to bring something to do on the plane. A book, or a tablet loaded with a movie. Don't forget headphones. They don't have them on the plane and they are expensive if you have to purchase them in the airport.

Some will say that Frontier has a poor on-time record, but I don't believe this to be true. I think they are almost the same as any other airline in terms of on time and cancelations. One thing to consider though is that if a flight on Frontier is canceled, the next available flight might not be until the next day, as their routes are frequent. But the likelihood of your flight being canceled is very small.

So in essence, as long as the schedule and fare works for you, you seem to be a good fit for Frontier travel. Don't worry about what others say.