Anything I cook on the hob is cooked to how I like it. The first time I cook anything in the oven that I haven't cooked before, be it meat, poultry or veggie dishes, I usually try it the first time by following the recipe or pack instructions, but often these instructions go out of the window. I usually only give oven temperatures in the recipes I post purely as a guide because all ovens are different. In fact, quite a few of my older cookery books give no oven temperatures at all, especially the Greek and Indian ones as a lot of the food was cooked on an open fire. I got quite used to judging doneness with my old fan only oven, but the new one (the American Whirlpool, made in Korea one!) can be used as a traditional or a fan oven and is completely different. It also has a turbo oven, which confuses me no end. For most foods I used a hot oven (200-220 C) or a moderate oven (170-180 C). Delia Smith said in one of her cookery shows, it doesn't matter what oven temperature you use, just cook the food until it is done, and demonstrated this by cooking a chicken at 240 C! I often use this temperature for the first 20-30 minutes when cooking a joint that is fatty, particularly lamb.
I like my meat and poultry well done so it falls apart when you stick a knife in it. Although I've got a meat thermometer, I usually test the doneness with a sharp knife for meat etc and a wooden skewer for cakes etc. The only exceptions to this are venison and wild duck, both of which should be slightly underdone. A Vietnamese friend of ours eats chicken cooked to the point of being more or less warm but otherwise raw, and there are plenty of Japanese fish and chicken dishes which are eaten raw. Not to my taste at all. The thought makes me feel quite ill.
Nowadays a lot of people recommend that you freeze or hang raw meat, fish and poultry for a few days before thawing and cooking, as this gets rid of any "nasties" that may lurk in fresh meat. This especially applies to any minced meat. I know someone who cooked some freshly caught fish for a dinner party, and there were worms in it, which made everyone at the party who ate fish feel quite ill. A local fishmonger said that is why their fish is always chilled first and that in a domestic environment the fish should have been frozen. Coincidentally, a lot of people feed their cats and dogs raw meat these days, and are advised that meat should always be frozen, then thawed. I always freeze raw meat and poultry for a few days before giving them to my cats and my dog. I don't particularly like the smell of fresh meat while it is being cooked.