My advice is to go to a bicycle co-op and ask them for pointers. Do not take this as an insult -- I really believe you could benefit greatly from some instruction or a demonstration. If there are no bicycle co-ops in your area, reach out to a knowledgeable friend. Or I can recommend some videos but they are not hard to find. There is _absolutely no way_ that it should take you an hour to fix a flat tire on a bicycle, given the right technique.
(For example, it should not take 5 minutes to replace a wheel. That should take about 10 seconds... I am genuinely curious what you spend your time doing over the 5 minutes and I am sure some practice / instruction could save you frustration. Likewise, even for a very tight tire you should be able to remove it quite quickly. A small tip I can give you for removing a tire is to make sure that the entire bead of the tire is unseated and sitting in the deepest part of the rim. This leaves a good amount of slack to pull the tire off. I usually am able to remove a tire without any tools, but a tire lever can make it even easier when used correctly.)
Certainly patching a tube adds to the time, I didn't include that in my 3-5min estimate. The usual practice is to pack an extra tube while out on a ride and patch the damaged tube later at home. Also worth noting there are modern patches that come with adhesive pre-applied that are very easy & quick to use, just peel and stick.
No worries but to be clear, do you stand by your opinion for old bikes? The ones I maintain are decades old and those 5 minutes I mentioned easily turn into 30 minutes at times because of brakes and guards working together against me. I've always considered that time to be the price to pay to have a cheap, undesirable (to thieves) bike and your estimate is challenging my world views!
Regarding tire removal, I recently did it like three times in a single week. It was like 15 minutes in sweat and finger pain every time. To get an idea of what one can achieve, can you remove a tire without tools with fat tires only or even thin road tires? Mine were thin, 23mm (less than an inch). By the way, in this instance, it wasn't a beater but a high-end 1970s bike.
Thanks for the advice, I'll look into it because it sounds like I'm missing something.
Don't worry, nothing I said is specific to newer bikes. Definitely, older bikes can present unique challenges but swapping tires hasn't changed. (Unless you get into tubeless... I wouldn't recommend it for road riding...)
How difficult it is to remove or replace a tire really comes down to the tire/rim combinations. Different types and sizes of tires can make a big difference.
Some combinations can definitely be trickier to mount, but with the right it can usually be down without too much physical strain. Mechanics in the bike shop do it many, many times each day after all.
(For example, it should not take 5 minutes to replace a wheel. That should take about 10 seconds... I am genuinely curious what you spend your time doing over the 5 minutes and I am sure some practice / instruction could save you frustration. Likewise, even for a very tight tire you should be able to remove it quite quickly. A small tip I can give you for removing a tire is to make sure that the entire bead of the tire is unseated and sitting in the deepest part of the rim. This leaves a good amount of slack to pull the tire off. I usually am able to remove a tire without any tools, but a tire lever can make it even easier when used correctly.)
Certainly patching a tube adds to the time, I didn't include that in my 3-5min estimate. The usual practice is to pack an extra tube while out on a ride and patch the damaged tube later at home. Also worth noting there are modern patches that come with adhesive pre-applied that are very easy & quick to use, just peel and stick.
Cheers and good luck!