ah, appropriate this topic is coming back as yet again its three in the morning, and yet again I'm making coffee .
There are several reasons I use the cafetier, also called a french press (btw I prefer the name cafetier as french press to me sounds like a wrestling hold), .
The first I have to say is simple convenience. Remember that in the Uk everyone has an electric kettle, this means anything like a stove top percolator would mean major extra work (especially since at the moment I don't have a workable stove top anyway). The cafetier makes coffee approximately the same process as making a pot of tea, ie, boyle kettle, chuck in coffee grounds and water and wait a bit, particularly since frequently I'm making fruit tea for my lady at the same time, that when she isn't making coffee for me .
there is also no need to buy extra filters or other things, since the triple mesh filter the cafetier itself has is entirely permanent, you just need to take it out and give it a wash occasionally, and of course you can customize how strong you want your coffee by adding more beans, or indeed if making more than two cups (at a time, buy a larger cafetier.
When my weekly tabletop rp group decided to start coming to my place for games, this meant making coffee for four at a stretch, so I simply bought a larger sized cafetier that makes four cups of coffee at a time rather than the usual two, I just add six or seven tea spoons of grounds as opposed to the usual three or four.
of course if I do feel diligent enough to grind my own beans things are a little less convenient, albeit I can usually have the beans ground by the time the kettle is boiled, but wittards, the same firm that provide my coffee will also grind it for me to the right consistency, and unlike others I trust them to grind the coffee properly.
The second reason however is exactly what matt1211 said. I've tried other brewing methods and of them all the cafetier seems to produce the best coffee with the best flavor. I can insure the water isn't actually boiling, (I usually boil the kettle then wait until its stopped bubbling), so the beans don't get burned, and there are no extra heating elements on the cafetier itself to overheat things, though as I conveniently have a stainless steel one the coffee stays hot for a long time, even longer if I use my cosy, although the coffee usually gets drunk first .
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)