They're much more convenient and faster to use than email. With email, you need to load whatever email client you have. You need to either remember the address or type in the whole thing. You either fill out a subject or not and then send it. The other person with a phone then either has to have some kind of push notification enabled (I typically don't), and if they do get it, it's usually with lots of other emails. They also have to be able to have a phone which supports an internet plan. With txt message, you don't need that. You can also txt message someone with a very basic phone. Also, if the state of my phone is off when a txt is sent, I'll get the txt when I turn the phone on. The same would be true for email.
Sending a txt is much easier and in the time it takes to craft a single email, I can have either a partial or full conversation with someone about something (be it important or not). At the slight increase in cost, the added convenience of the service has been very useful. Also, you can send a txt to an email and vice vs, so that option also adds value for those who don't txt message.
I participate in facebook because I do see some value. I see no value in it as a replacement for email and lots of other communication tools for friends/family, but for what it is, it works fine for me. The one tool that I've yet to find a personal value in is twitter. I've tried it for various things and nothing makes me want to continue using it.
Sending a txt is much easier and in the time it takes to craft a single email, I can have either a partial or full conversation with someone about something (be it important or not). At the slight increase in cost, the added convenience of the service has been very useful. Also, you can send a txt to an email and vice vs, so that option also adds value for those who don't txt message.
I participate in facebook because I do see some value. I see no value in it as a replacement for email and lots of other communication tools for friends/family, but for what it is, it works fine for me. The one tool that I've yet to find a personal value in is twitter. I've tried it for various things and nothing makes me want to continue using it.