I’m not poor but isn’t a private aircraft ridiculously expensive? So expensive as to be prohibitive for almost all Americans. At least all that I know.
I try to fly business when I have to fly. I hate flying, but flying upfront is a million times better than the same trip in the back. I use my miles, or I pay with a combo of cash and miles, but I will do anything to avoid the coach section.
To add insult to my injury, I have very bad hips and herniated disks in my back. I’m usually in terrible pain.
I have so much trouble trying to get out of my coach seat that I inevitably bump the person in front of me. What I do is buy that person and his or her flying companion a drink. Amazingly a drink almost always makes things better.
As with everything in life, it's in the details. If you are flying your own little single engine airplane (like a Cessna 172), then it is analogous to using a car. If you are in the new Gulfstream 650, then one flight could pay for the house I live in.
I have a little Cessna. It flys at apx 150MPH (135Kt) and burns 20 gallons of fuel per hour. Fuel cost is $4.50 a gallon, so I'm paying just shy of $100/hour. If I fly from Houston to Aspen, it's about six hours. That's about $1200 round trip for fuel, say another $25/hour in maintenance cost and we are up to $1500 for a trip to Aspen. The bird holds four souls comfortably plus luggage (it's bigger than the Cessna 172 cited above, the costs would actually be lower with that airplane). Four plane tickets on United to Aspen would run $1003 each (I just did it through expedia). That's $4k for four people on the airline, or $1500 in the little Cessna. You could airline in to Denver, suffer the joys of Spirit Airlines, rent a car and drive in... the airline cost will be about $800 for everyone plus bags, and another $500 for the car... so just under the little Cessna cost. HOWEVER, Spirit flys at odd times, and there is the additional four hour drive each way to and from Denver... so you end up loosing a day (or two) to travel.
I will be the first to admit that if you are flying internationally, then the airlines are the way to go. However, domestically, particularly to places the airlines don't service, or charge a premium to service, or where it takes a long time to drive, a little airplane can make things happen for you. Also, in the initial posting, cost was not a consideration.