SBS (Microsoft Small Business Server) is a GREAT product!  It just may not be appropriate for a Mom & Pop shop....
 
It combines several Enterprise level products that normally require separate physical servers and separate licensing into one bundle for small businesses...
SQL server (databases) 
Exchange server (E-Mail) 
Web/Proxy Server
Sharepoint Server (document sharing & collaboration) 
Project
Domain controller (manage user accounts & file permissions) 
Remote Access
 
 
The alternative for a small business (10-25 users) costs ALOT more money so SBS was built to bundle common IT services into one box instead of 5-6 separate servers. 
 
It is not a good choice for a 3-5 user business... that's TOO small. It is great for real estate/inurance offices, large churches, small charter schools, growing manufacturing businesses (2-10m/yr)...  
If you are doing 25k/mo then you are still too small to need that kind of equipment.  When you get 10+
computer using employees and are doing >100k THEN you can begin to benefit from centralized account management... group policies/permissions....online document sharing portals...collaborative project management, etc...
 
Just because SBS is not right for YOU doesn't mean that it is a bad product. It was just a bad choice!