There are several reasons that I prefer having a prepaid mobile phone to a traditional service contract. For starters, with a prepaid mobile phone, I never get surprised by hidden charges or fees. This is a very important feature for anyone on a budget or for parents with teenagers in the house. How many times have we read news articles about a teen who unwittingly racked up a $1,000 bill due to excessive texting and a lack of understanding about monthly charges? If you want to eliminate that kind of risk, then you need an alternative to traditional contracts.
Another reason I prefer having a prepaid mobile phone is that I have complete control over every aspect of the experience. In addition to determining how much money to pay up front for calling minutes, I can also decide when to get a new handset and how often I recharge my plan. I no longer have to wait two years or more for a current contract to expire before I can make these moves. With a prepaid mobile phone, I can upgrade (or not) as I see fit. This is the kind of control that all consumers should have, so I cannot imagine entering into a long-term agreement that penalizes me for changing my mind or wanting an early upgrade.
One of the old knocks against owning a prepaid mobile phone is that the handset itself usually isn't anything great. This goes back to the time when you could buy these devices at a convenience store or gas station and go on your merry way. But that argument doesn't hold true anymore, as you can get a prepaid mobile phone SIM card that will work with just about any handset on the market (so long as it is "unlocked"). This gives you a wide range of choices, and allows you to use the most current GSM cell phones and trendiest smartphones even when on a budget.
The bottom line here is that using a prepaid mobile phone instead of getting mired into a very long contract would be highly beneficial to most people. Business users might have a different agenda, but those of us dealing with daily budget issues and limited resources would do well to prepay for this type of service.