I am discriminating, picky, OCD (according to my wife) - take your pick. I like things to be as good as I can get them and can afford. Music and audio equipment, photography and camera equipment, cars, knives, food and cookware/bakeware...and coffee. Ah, yes, coffee.
I became interested in coffee and the many different ways to prepare it several years ago. I laughed when someone on one of the coffee forums welcomed me to the club (no robes or secret handshakes, though), and said that the next step was roasting my own. It didn't take long, especially after I figured out how much it would cost to stay supplied with fresh coffee from artisanal on-line roasters. I'm on my second drum roaster, currently regarded as the best available short of getting a pro-level gas roaster (and if I could, I would), complete with thermocouples and a thermometer to be able to control the roast profile, which makes a huge difference. The chemistry of coffee roasting is fascinating and incredibly complex. I also have an excellent grinder, several press pots of varying sizes, an ibrik for Turkish coffee ("Coffee should be dark as night, strong as hell, and sweet as love"), and a Technivorm brew machine that I no longer used because my wife decided that coffee made her liver swell. One day, when money and space permit, I'll get a spring-lever espresso machine.
I get my greens from a place in Oakland that is to the home roasted coffee world what CKTG is to the knife world. Fresh-roasted coffee from all over the world (the greens keep for a year or even two), roasted how I like it, all the time. I can choose not just different countries, but even specific farms - and yes, that can make a difference, like a Wüsthof versus a Konosuke.
Coffee from CKTG would be better than store-bought, which is not even tolerable after experiencing "real" coffee. But if you really want to take the plunge, home roasting is easier than you think, and once you get the equipment (which can be as cheap and simple as a scale and a hot-air popcorn popper), do it and you'll never go back. Give up my Konosukes and waterstones? Same thing, really....