-oven takes forever to preheat and ends up taking an hour to cook things

Don't cook shit on high power. You don't cook everything in your oven at max heat or high heat in the stove do you?

you can just add +15 minutes to your timer to take into consideration the preheating time. I'm just annoyed that I often end up so hungry that I have to eat something else while my food cooks in the oven.
That's called a Toaster Oven right? I might try it.

>-oven takes forever to preheat

Just whack the food in straight up (or give it a cursory 30 seconds warmup at least) then add 5 minutes to the cooking time.
(Or not cos I hate things being overdone and dry)
t. a fellow lazy man

Some foods provide poor results if exposed to low heat for too long, especially baked goods. Additionally what you're talking about kind of exists. Commercial combination ovens start heating gently in the main chamber and also superheating the air in a separate chamber, as well as boiling water for steam injection. You set the temperature and humidity desired and it basically instantly reaches it.

How many ovens take 15 minutes to heat up.
Even at my awful student house with an electric oven from the 1970s, it was 5-10 minutes tops for full temp

Gas is up in under 5

mine is fan-forced and is the cheapest one I could find, might have something to do with it.

Not even nearly as easy as you seem to think.

I love cooking things that take all day in the oven or on the stove top or both.

I thought that is what Sunday is for?

It takes 5 minutes to get a saucepan of water to cooking temperature then you can switch off the hob and leave whatever you are cooking in the water to simmer, no micromanagement needed. Often you can fill it with water and start heating it up before you add the ingredients.

Small things like spaghetti will be done in 20 minutes. For whole potatoes or a big chunk of meat you might want to raise the temperature again and let it simmer for longer.

Little micromanagement needed, water transfers the heat quickly.

mootnotes: Boiled meat is not very tasty though you're not boiling it, get a kitchen thermometer and make sure the temperature is about 70c (160f) or 80c (175f) and only fill the pan with as much water as is needed and add a stockpot. An electric hob will continue to transfer heat to the pan when off, sometimes it only takes 20 minutes. A jug of water is useful for adjusting water levels. Keep the lid on for efficiency.

for baking, you need a steady, high temp throughout. if you had a gradual increase and then a steady temp, it wouldn't bake correctly.