What brush are you using?
I don't believe for one second that Gillette's cartidges are better, in any way, than the traditional DE razors. The stuff they call lather is pressurized crap on a can which only resembles lather when it's out of the container. It's bad for your skin and it smells toxic. A proper, moisturizing, quality and natural shaving soap is soooo much better, in every way. The brush will in most cases cleans your face as well (unless you're using a really soft brush). I prefer stiffer bristles, and my Semogue 620 is nick names a "soap devourer". I love it.
Traditional wet shaving is also so much more fun than using cartridges. You get to shave the way you want. You control the variables, not Gillette. Shaving can turn from a painful chore to a fun hobby. There are several acquisition disorders out here: razor acquisition disorder (RAD), shaving brush acquisition disorder (SBAD), blade acquisition disorder (BAD). There are also the more perverse ADs: shaving brush handle acquisition disorder (SBHAD).
Some people joke around with this as hiding the purchases from SWMBO (She Who Must Be Obeyed), much like people don't really want to talk about future purchases of expensive lenses to SWMBO.
As strdawhovious mentioned, there are much money to be saved (unless you develop multiple ADs, of course), mainly in blades. I should be mentioned that a good DE razor will last for generations, and you can pass it on to you son, who will pass it on to your grandson. A good brush will last for 10-20 years with good care, and a puck of hard shaving soap will last you from 6 months to over a year, depending on your brush, how often you shave and your technique, your water etc etc. Needless to say, invest in a good kit, and you have what you need for a while. You can laugh at those at work who are constantly complaining about how bad their Gillette Fusion with 5 blades, one presision blade, which runs on AA batteries and vibrates and look orange with awesome ferrari lines and features. Just show them your all metal DE razor and a blade, and they will look at you in awe.
As if this isn't enough positives about TWS, it's also more environmentally green. Less plastic thrown away, lasts longer. shaving soaps come in reusable containers, just buy a refill puck for it. the soaps come in many different versions. manly smells, flowery smells, foresty smells. Some have menthol in them, which is aweeeeeesome on hot summer days.
I could write about this for a long time. If any Scandinavians read this,
check out this site. It's a programming project I had in uni last year.
It seems several persons are into it. Should anyone need any help on resources, online stores and such, I'm sure you could contact any one of us!