The 'P' on the mode dial stands for Profesional, so there's no problem with you using that.

Seriously  - if you are getting shots which you want, and others are asking you to do some for them too, then you ain't doin' a lot wrong.  I don't see any reason to change unless change is what you want. If others can produce better shots then let them put their photographs where their mouth is and start producing them. Product photography is very rarely straight from the camera type stuff.
Images for the type of scenario you described are not fine art photographs, the clients will want representative photography to sell their business.

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html