I can honestly say I have no idea what this is like. Not... enjoy... cycling? Does not compute...

If I had to rank them. I'd probably have cycling at the bottom of the list of the 3 as far as what I enjoy doing. However, I use that as a challenge to myself. 1st it's the mental workout that is just a big part of training as anything else. I just did my first century in October, on my trainer, in my garage, because the event I was going to do got cancelled because of stupid Joaquin. It was TOUGH. I didn't HAVE to do it, but I wanted to test my mental strength as well as the physical. You can set smaller goals for the bike and then just add on to them as you go. It sounds like focusing on nutrition may be one thing and after that you can pick something else. I've found that riding on my trainer instead of outside really forces me to focus on my workouts since I don't have outside distractions and once I do hit the road, it feels that much easier than being on the trainer.

Why not just let the bike/triathlons go if you don't like it that much? Don't push yourself to do something you hate. It's one thing to have a bad ride. It's another to dread it every time. All of the things that you mentioned, or variations of them, are part of the learning curve to ride a bike. But if you are checked out mentally, you are going to approach it entirely differently than someone who looks at those things as experiences/opportunities to help them improve.

Wait a year or three. Then, try it again later. Maybe some of the factors will change - your bike (wrong bike for you?), nutrition (that you may be willing to tackle later, if you are in a better mindframe), and the stage of life you are in. Also, is it particularly unsafe where your ride?

Just enjoy the running and swimming for now. You like them, and you are getting better at them. You can find lots of events/activities for doing just those two things.

I love being on a bike. But that wasn't always the case.

I'll add my 2 cents since I always hated biking when I first started triathlon. First of all, I did short rides to boost my confidence on the bike. This typically meant 30-60 minutes of just riding around the local roads or a paved trail (I only have a road bike). I would go pretty slow and focus on the following:

1. Form
2. Debris in the road
3. The scenery

I would limit long rides to the weekend, and they were purely based on time, not distance (initially). My biggest hurdles initially being stable on the bike (did lots of core workouts to help with this) and getting ultra tired and feeling ready to pass out. Therefore, the next thing I focused on was overpacking hydration and nutrition. And I mean overpacking...my initial 2 hour rides I would have 4 water bottles, camel back, and enough nutrition as if I were running 2 marathons back-to-back. Yes, this made my bike a lot heavier, and I was even slower...but I NEVER had issues with energy or feeling like I was going to pass out or bonk. Eventually I trimmed all of this down.

The next most important thing I did was go to a local seminar on changing a flat tire where you see a demonstration and then perform it on your own bike. Knock on wood, I have only ever had 2 flats, but I was confident enough to change them thanks to the class.

The more I rode, the more confident I became in my cycling ability. Then out of nowhere I just started liking to bike. Don't get me wrong, it's still my least favorite activity of the 3 sports, but I do enjoy biking now.

I am not a fan of spending money...so after 5 years I am still using my base Trek 1.2 road bike with no fancy bells or whistles. I have a helmet, reflectors, lights, dual sided clip/flat pedals and shoes, and a bunch of cycling shorts. Other than that, I don't invest in anything else...if my bike lasts, I will be racing in Kona on my bike, haha.

Good luck!