This should be a fun thread. In my case it was the same reason for both my truck and my wife's car. A growing family. When we met and got married we both had trucks. When planning child number 2 we decided that 2 trucks don't work very well for a family of 4. This is when we got the Benz. My mother-in-law turned me onto them. She had a 300SD. I had to do a little convincing to get my wife to drive the station wagon I found. But now I think she'll NEVER get rid of it. When we got my current truck it was the same case. We were starting to out grow my extended cab. So I got a crew-cab. I decided I liked our diesel car so much that I wanted a diesel truck. The rest is history.