Nah. Hi is fine. So are hey, hullo, hallo, and in some casual companies and especially with friendly co-workers, even "yo" and "\'sup".
But seriously, hi is fine. There's nothing wrong with it. I personally think it is friendlier than hello, and it is certainly more efficient, which is why I say hi in Germany when people say "hallo" to me. Like, seriously, 2 syllables to say hi? So inefficient.
But seriously, hi is fine. There's nothing wrong with it. I personally think it is friendlier than hello, and it is certainly more efficient, which is why I say hi in Germany when people say "hallo" to me. Like, seriously, 2 syllables to say hi? So inefficient.