I've been driving commercial vehicles for over 21 years, starting out with the big motor coaches in 1998 and switching over to trucks part time in 2003, and full time in 2007.
Driving is not a bad job, but it is not the job it was when I started, or even 10 years ago. The pay varies widely from one company to another. There are local, regional, and over the road routes. Some companies have a variety of routes available, some not so many. Because of my age, education (High School) and experience, I can't find another job that equals the earnings potential driving provides.
If you are truly interested, check out several companies. I assume you would be new to the industry, so that will mean attending a driving school. My advice would be attend a driving school and pay for it yourself. Do not get wrapped up in a company training program where you are committed to that company for any period of time.
Also, look for a company whose drivers brag about the way the company treats the drivers. Stay away from companies where the company brags about how they treat drivers, unless the drivers also brag about it.