Conversations through Text

I have found that having a serious converation by texting someone isn't always the best idea. On numerous occasions friends and I have been texting and having a good convo and the next thing you know one of us is mad at the other, all because we took the text received the wrong way. It is hard to understand the ton of voice through a text or even e-mail for that matter, you can't tell is someone is being sarcastic or serious, happy or sad. I have found the only way I can get my point across is through sad or happy faces, and exclamation points and sometimes that doesn't even work. My conclusion when trying to have a serious conversation with someone is to either call them or talk to them in person just so you can have good communication and nothing is taken wrong.