convenience... lol. maybe it was easy for him to text his decision (for whatever reason) because he's not good with awkward social situations. maybe he just didn't see it as being disrespectful. maybe its like when you run bathwater and you stick a toe in to see if the waters too hot, he texted you to protect himself from the anger and verbal violence that might follow what he had to say lol
He took the easy way out and depended on electronic device rather than deliver the message personally. If you care and respect the girl then he should have picked up the phone to talk to you. A text message is inconsiderate and highly impersonal. Sure, breaking up isn't an easy thing to do and either way the receiving party will be hurt. But, I think he should have been a man and called, the texting option is done by boys.
haha . I've had this happen to me before , the guy is probably WAY to cowardly to come clean , and break up in person .. like jpk1976 said , a lot of guys try to look for a simpler way out without all of the questions . (: