I hate the bus system here. The buses are always well conditioned in the air department and typically smell decently, I just hate the erratic timing. If I miss the bus? No worries! I just have to wait an hour and a fucking half (no exageration on several of the bus routes) for the next one.
I have to get out to the stop about 15 minutes before the bus comes to ensure he isn't early. Many times he's 15 minutes late, and there's nothing for me to do about it.
Fortunately, I get a free ride on the bus because I'm a student. Federal funding FTW!
As far as noise, there are active conversations with strangers which are oddly almost always pleasant and enlightening, I've never dealt with a screaming child because people here believe your child is everyone's responsibility and will actively voice this (i.e. telling you to "shut your damn kid up!" often with support of the bus driver). The same applies to the "singers". Little old ladies, though, rule the buses like queens. They are not to be fucked with or you everyone around you will make your bus trip very uncomfortable.