I start pretty much everything indoors under lights. Incredibly easy & MUCH cheaper than buying starts - especially when you keep in mind that except for a few exceptions, properly stored seeds last for YEARS with very minimal decreases in viability. For instance, this year I planted endive, tomato, lettuces, peppers, & eggplants using seed that was 5, 8, & even 10 years old. Got excellent germination. So for anywhere from $.50 to $4.00 per pack (which contain dozens of seeds), I can grow for years without having to re-purchase (unless, of course, I want to try something new, which I can NEVER resist - lol!).
Setup is cheap as well. I just have several cheap fluorescent "shop lights" purchased from Lowe's suspended by cheap chains so I can start them 1" above my planted seeds & raise them as the plants grow. I've also just sat the lights on stacks of bricks on an old table, which enables me to do the same thing.
I've never done any artificial "breezes" or heating mats, or any of that stuff, & I've been raising everything & anything with absolute success - greens, beans, corn, brassicas, tomatoes, peppers, eggplants, squash, cucumbers - you name it. Probably the only thing I direct-sow outside are root vegetables (although I've even started those indoors upon occasion - you just have to plant them out when still tiny & with little to no root disturbance).