Already on a No Contract Plan

I voted in your poll, already on a no contract plan, I have a TracFone, I pay for minutes as needed. There is no up front cost, no monthly cost either. Why would I pay $40 or more a month for the use of a phone, when I only use 50 or 60 minutes a month.
Also, with Trac Fone I have an LG 800G so I can surf the web. Don't really need anything else.