333OnlyHalfEvil said:
but it seems like it's more to distinguish licensed builders from nobodys
To some degree that is correct; however, that's a relatively important distinction. Being licensed comes with a duty to follow the law for contracting in the respective state. While states in the US vary in their licensing requirements, all provide some level of protection to the general public.
Many design and construction defects are never brought to light. When they are; however, you will wish you had followed the law, building code and plans and specs to the letter! Your liability can be tremendous. Don't consider that being a general contractor is necessarily a simple task.
General contractors and their employees can only do rough carpentry framing and they have to sub-contract out all the rest of the disciplines
This is not true. In most states, General Contractors can "self-perform" most of the construction. They are only required to subcontract separately licensed disciplines such as electrical, HVAC, plumbing and roofing. If they also hold such licenses, they can perform those tasks as well.
As an engineer, I can already contract, why should it be a problem if I do the entire job and just license out all the appropriate trades plus carpentry?
Again....not the case. An engineering license allows you to practice engineering, not General Contracting. I know of no state that allows a licensed engineer to serve as a General Contractor, unless the engineer also holds a GC license. If you offer to construct the project under a contract you are offering General Contractor services and if you're not licensed, you can likely be prosecuted for unlicensed contracting. That would not be good for your engineering reputation either!
I offer these items from the perspective of a licensed engineer who is also a licensed General Contractor and a licensed Roofing Contractor. Further, I teach Construction Management at a regional university in the southeast US and my primary engineering practice is structural and construction forensics....I know construction defects reasonably well! I do not offer General Contracting services nor roofing services as engineering is my primary business focus. I am a firm believer that each should be kept separate for better protection of all involved.