Fluff - what hobby would you AVOID like the plague

Caving, cliff diving, scuba, skydiving- anything that I could suffocate doing or thst involves heights

That caving with scuba equipment sounds horrifying. 

All of the above!

You couldn’t pay me enough to go into deep caves let alone ones with water/tunnels 😱

Anything high like the bungee jumping - nope!

That's how I got into crocheting amigurumi - in Texas, blankets, scarves, and sweaters don't get a ton of use.

To answer the OP, like most here, I avoid anything hobby could easily result in death or dismemberment. Also, I want to be a person who likes hiking, but I really don't like it at all. I like walking on a flat, preferably paved surface. I don't like slippery gravel and unstable rocks and near-vertical climbs up or down.

Anything that involves putting my head under water (scuba, snorkel, diving), being in dark cramped places (caving) or involves extreme heights (sky diving, bungee diving).

Extreme ironing.

That too!

It's called mountain biking and dh and ds do it a lot. Several bike trips a year to famous biking areas, and several times weekly where we live. There are trails that say things like death to the right, because it drops hundreds of feet straight down, and it suggests that if you're nervous to walk your bike. They aren't adrenaline junkies in other ways, but the mountain biking they do is nuts. I do baby rides only. 

I will not bungee jump, because just no, nor will I  jump off of anything into water, because my depth perception sucks. My parents had a jumping deck about 12feet up when they lived on a lake. My parents, all of my siblings and their spouses, all of my gazillion nieces and nephews have jumped off of it. Ds and I are the only 2 that never did. My mom was 76 the last time she did it.

Where I live, there are a ton of bicyclists who ride around on our curvy mountain roads. The local college even has a bicycling team. I HATE when I get stuck behind them, because there are a ton of places where I can't safely pass them, so that is one hobby I will NEVER take up.

I'm not the outdoorsy type, so I'm not into hiking, backpacking, skiing, etc. I do love white water rafting, and I'm hoping I can go at least once this summer.

As far as boring, indoor hobbies I won't take up, that includes drawing and painting, cleaning (ala Monica Geller), and playing the drums.

Oh my gosh, all the talk about caving is giving me the chills. No way. Absolutely not. I would jump out of a plane with a parachute, that would really be fun actually, before I would go in any cave. No thank you.

Hiking, climbing, most sports

Scuba diving. Just thinking about it has me wanting to go into a panic attack. I’m not great with getting into water that can contain sharks, I’ve done it all over the world just to say I did, but didn’t stay in the oceans long. I blame my formative years of Jaws and living by the Great Lakes where it wasn’t a worry

I’m afraid of heights but managed to climb Mt Fuji. It had great paths so I felt in control, beyond that, no.

I get it. It isn't for everyone.

I love snorkeling but I failed scuba certification because my ears wouldn't clear and I would have had to be cleared by a dive doctor. I really wanted to dive the Great Barrier Reef for my birthday, but I couldn't manage it.