Why do you think it's so ugly? Why is "by the way" inherently more beautiful than "btw"? This is just informal shorthand in text messages and online chatting.

Calling this language bad is like saying swimsuits look stupid. Of course, if you walked around a shopping mall in a swimsuit you'd look like an idiot, but at the beach it's just fine. Similarly, such acronyms are fine in text messages, just not in academic writing, etc.

Thank you. It is interesting for me reading your comments.

Thank you Alan for your comment. I don't like these abbreviations. Hw r u? - What is it? I am a learner, and maybe I don't understand English completely, but I believe it is better to write: " How are you? How are you doing?" It takes few seconds.