Please advice what is you opinion Windows versus Ubuntu. Pros and Cons?

Pros:
Very Fast
No Virus, and good security
Hassle free software management (one command updates everything)
Great & Powerful UI (unity scope, workspaces, wobbly windows)
Not much Linux knowledge is required to use Ubuntu
Privacy - there is lesser info collected compared to microsoft
Open Source
Cons:
Not suitable for gaming
No Windows applications
Some trivial things require linux terminal commands
Hardware vendor's driver support is not good

If you use PC for just surfing and multimedia or development (open source), Ubuntu is highly suitable for the purpose