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Handicapped stalls aren't reserved for handicapped. they're just handicapped capable.
if the other stalls are full, go for it.
I've had people "bang" on stall doors who aren't in wheelchairs, too. I think it's when they really really need to poop. >

Yeah, that feeling of "I'm seriously going to shit my pants" can make people do things they normally would not do. >

Yes, sometimes it even makes them shit their pants. >

That's one option, yes. 
Better than getting arrested. >

Why not do both? >

Disabled parking is reserved. Disabled stalls aren't. They are available,  not reserved. >

That's why they have just started using the term "accessible" instead of handicapped. >

I have yet to even be in the same restroom as a disabled person. If that stall is open, I use it. >

I have once and I felt so bad. I had to pee so bad at a bar and the first stall was the accessible one not the last. So even though the rest were open I just ran to the nearest potty. And as soon as I stepped out I saw a girl in a chair waiting. >

Hahah that's like something from a movie. Why'd you have to go so badly? >

I was at a bar, I’d had a few drinks and it just hit like a train >

Haha did you calmly walk to the bathroom or was it a bit of a speedwalk situation >

Calm but like with purpose. This was like 7 years ago I don’t remember too many details and specifics I just remember feeling bad. >

It's handicap accessible, not handicap only. >

Often times too the baby changing table is in there >

And they fit an entire stroller. When my son was still here, I always used the bigger stall, I didn't want to hold my baby in my arms while pooping. >

Also, for parents, the big stalls are typically the only stalls with a changing table in them. >

This is the comment. Its usually where the only changing table is located. >

Or enough space if you have to do it on the floor >

Speaking as someone who is disabled, has a service dog, and doesn't fit in normal stalls...... 
I absolutely agree with you. There is NOTHING wrong with using a disability accessible stall if there's no one in it! It's a damn toilet; it's there to be used, even when a person with a disability could show up at any second! Just because I have a disability does NOT mean that I can't wait my turn! 
Now, I will say that if the disability stall opens up, and you're the next one in line with a disabled person directly behind you, it is kind to offer it to the disabled person, simply because it's easier for a stall to open up that you can use so it will happen faster for you than it would for the disabled person, but, again, that's just if you want to be nice! At no point is that expected of you! You are allowed to go, nope, I really gotta pee, I'm not willing to wait, and just take your turn and I'll just wait my turn. 
I hate when people try to act like disabled people should all be tip toed around and given whatever they want just because they're disabled. I find it to be deeply infantilizing, and I don't want people to do it because I want to be treated like an adult. 
You're doing just as you should, and this really shouldn't be an unpopular opinion. >

I’ve had this happen to me. I’ve had 4 surgeries on my foot and have very little bone left in that part of my foot. Getting up from the toilet I need to lift myself up with the wall bars. Had a lady absolutely flip her shit on me when I came out of the handicap stall, walking with a cane no less, screaming about how I had no right to be in there. She was not in a wheel chair. There were 3 stalls available to her. >

I had a lady at an amusement park recently make a passive aggressive comment about how disabled seating is supposed to be for handicapped people and their families (after my wife asked her grandson to not stand directly in front of her). I am disabled (shattered vertebrate in back). The funny thing is, the passive aggressive lady was in a mobility scooter that the park rents. 🙄