Gym pet peeves

For the past almost 2 years I have been working out at my local YMCA and I do enjoy many of the activities I do there.
I also have quite a few things to say about my experience and these are my biggest pet peeves.
All are equal in annoying-ness but I'm going to number them anyways.

1. Excuses from others about why they haven't worked out or why they don't want too.
I have known a few people that are really just at the gym to 'hook up'.
Emotional trauma is given as a frequent reason for bailing on workouts, and I don't want to seem mean or unsympathetic, but I have gone through many troubles in my life and none have made me fat except having a baby.
Technically I weighed less after giving birth than I did almost 2 years ago when I signed up to be a member at the Y in September of 2012. I know I weighed about 170-80 lbs after I had Parker, and the summer of 2012 I weighed 215 lbs+ now I weigh 144 lbs on a good day, and only a few pounds more other wise.
So even having a baby isn't really a good excuse for being fat or not working out.
When people say they are lazy they are being honest and that makes them think it's OK, it's still not
2. When people make comments to me that are not based in reality.
I don't know if this happens to anyone else, but because I do drop-in classes frequently (2-4 times a week)
I sort of make friends. I like these people and I notice when they are not there in the class with me.
The annoying bit is when the show up after a month or two and say TO ME 'Haven't seen you in a while, been taking a break?" When I am the one who was there every single week at the same time, same day, AND THEY WERE NOT! It's like they are trying to make it seem like I am the lazy one and they are the truly committed to fitness person. Which brings me to the next pet-peeve.
3. People who look great without even trying. Skinny girls with boobs and butts galore and smooth unblemished skin who don't even try as hard as I do while wearing designer workout clothes they claim were really cheap and those clothes just fit them like they were painted on without any bulging or anything.
Meanwhile I am in my too-short 'long' tank top that I covered with second hand athletic t-shirt that is baggy on the top but almost too tight on the bottom and my workout shorts that are baggy in the crotch but create a muffin top at the waist. Technically I am usually 'smaller'(or about the same size) as a whole than these awesome looking people and do the exercises in better form for longer than all of them as well.
It's not fair that I work so hard to be what the pretty girls are normally and they barely try to be better.
4.Weird guys that stare at me or are just 'around' just their existence is worrying.
I mean, they don't usually do anything wrong. They are just that fat, excessively hairy man in the hot tub that when I see him, I'm thinking "oh man, now I can't be in the hot tub because who know if he even wipes his ass when he goes to the bathroom". Or that overly muscled guy that grunts while lifting weights. Or that man that tries to talk to you for no apparent reason. Or the ones who hog the machines and almost break them.
5. The kids and people who just 'hang out' without working out at all.
People that are just in the way of what I want to do bother me no matter where they are, but at the gym I feel like I have a limited time to get my workout done and I don't have the courage to get the loiterers kicked out. Although I've seen them be kicked out, so I must not be the only one who is annoyed by them.
6. Stupid people. People who have no idea what they are doing and even when they get help they don't learn, they don't get it and they don't respect anyone else who does. People who complain about being fat all the time, or people that just use things wrong or hold up a class because they repeatedly claim they can't do something. Truth is that they just aren't trying hard enough. I try to have mercy for them for a while, but most of the time I actually want them to either smarten up or leave. That's what I would do if I were them!

That's all I can think of for now. I might think of more later.