It depends on the severity of your stuttering. If you're like me and stutter severly (block on every word) and everything you say takes a very long time (a sentence can take up to a minute to get out of my mouth) and causes a big struggle then it is a handicap in communicating. In this fast paced society there are alot of people that simply don't have the patience/time to let me finish my words/sentences. What's left then is to find people who do have the patience and if you can't find them you will up in social isolation.