I used to do it, started out with one of those kits. First beer I made was a Pilsner, I was religious with the hygiene and all my equipment was new, where I boiled the wort and the cask for primary fermentation. It came out surprisngly good, I think I made 25 litres, it was gone in no time.
I made it carefully as it was my first time, used honey instead of sugar to bring the alcohol level up, I actually used some very nice expensive honey from the Alps, it's honey that bees make while eating a specific flower, it literally tastes like flowers, it gave the beer a delicious after taste.
Second time I sort of slacked off with the cleaning, I think some bad bacteria might have thrived in brew, it was a Stout, ended up tasting quite bad, I still managed to drink half of it, as it was alcohol after all, but then gave up, as the taste seemed to get even worst the more it aged. There's still like twenty bottles in my basement back home.
I did a lager as well at one point, I think it was from one of those Cooper cans, came out decent enough considering the price per litre is like 50 cents, I went very heavy with the honey in that one, added a couple of kilos of sugar too, as I thought it's a lager, fuck it, no one cares about the taste. It came out 6,8% in the final measurement I took. It was good cause I made that just before the 2010 world cup