I worked for a small recycled plastic (business to business) trader for 15 years. Also started up various closed loop recycling programs around the country
When it became apparent that the owners were enriching themselves instead of paying my vendors, commission checks were bouncing and they were "borrowing" my 401k contributions(got that all back) I left and took some of my clients with me.
5 years ago I started my own LLC and its been great. My business works with tax free items(wholesale scrap) so I don't have to worry about that and just file state and fed estimated income taxes every 4 months. While I don't make as much as I used to(approx 75-80%), I am able to make my own hours, no commuting, can take care of the kids, pay my vendors when I say I am, not lose a client because ther payment bounced and not go beg and plead the boss for a vacation.
The only set back is that I have become kind of fat because my home 'office" is so close to the kitchen!
Videodrome you should start your own freight forwarder co. I use freight forwarders all the time since I really don't have time, now how or patience to hunt down an actual truck. I use CH Robinson and National Traffic now. Im sure you could do pretty well at this.
Plainview , I highly recommend you at least try. There is no harm in actually getting an LLC except maybe yearly state taxes on keeping it current. Start with somehting that is serviced based (little overheard) like home PC repair , concert ticket sales, elderly transport, mobile dog washing, sitting, walking etc