I suppose I fit the 35-55 male traveling alone demographic, but I rarely wear a suit flying domestic. I have a rollerboard that I carry that fits in the overhead wheels first on most aircraft and a computer bag that fits under the seat, because of the actions of a lot of F pax cutting in line so they can put their suitcase in sideways and their computer bag next to it, occupying 80% of the overhead bin. I know they are entitled to the space, but the line cutters really get under my skin.

I have devised a rather easy way to deter these line cutters..I hold my computer bag on whatever side the line cutters are approaching, and kind of hold it out in front of me a little so it almost touches the person in front of me so no one jumps me. It might look awkward but it works.

If I check a bag, which is rarely, and don't require any overhead space, I will board as late as possible..after all, those are usually longer flights and I want to minimize time spent in the plane.