Then you are a lucky Sprint customer. See link below....Sprint's own forum on iPhone issues (almost 1 million hits)....speed is a major issue.
http://community.sprint.com/baw/thread/78766?start=0&tstart=0
I don't think anyone is disagreeing that Sprint has the slowest data speeds. With that being said the speed is good enough that I can stream YouTube and Netflix on my 4s and rarely have a problem. Sure, the initial buffering is a little longer but it's not like the wireless data is useless. The only time that I really notice the slow speed is if I try to download an app, or some other large chunk of data, when I'm not on WiFi. I'm typically on WiFi though so it's a nonissue for me. If I was a heavy data user and I was rarely on WiFi I'm sure the data speed would drive me nuts, but that's just not my situation.
The network, which includes free roaming on Verizon's towers, has been solid in my experience (and I've been w/Sprint for many years in multiple parts of the country) and a plan w/AT&T or Verizon that would accommodate my typical phone usage would cost me about $20 more a month than what I pay for Sprint.
When my contract expired and I decided I wanted a 4s I spent weeks analyzing my usage patterns and compared that to plans from AT&T and Verizon and finically it just didn't make sense to spend so much more money for basically faster data speeds when the Sprint data speeds, while the slowest, still met my needs.