I've been commuting for a few years now and on average do 3 days a week. My new commute is over a lot of curbs and intersections which my road bike does not handle well, so I started looking for a hybrid/mtb to commute on. Something with front suspension and disc brakes if possible (for snow!). Yesterday I found a Specialized Hardrock with disc brakes for $150. I checked it out and it was in good shape, shifted, brakes worked, just needed a bath bad. I bought it.
My wife was not happy and I cannot justify the purchase with her. I got her hooked on MMM which made her uber cost conscious. Which is awesome, except when I want a new commuter. Combined with spending the money (which isn't an issue, we make plenty just means less towards debt) she sees it more as a toy and I have a habit of buying expensive toys. (PC parts, road bikes, road bike accessories). I've toned it down a lot, but she's right. I get my heart set on something and usually after a couple weeks of toiling I buy it.
Anyway, am I just completely wrong in this purchase despite it's utilitarian purpose as a commuter and money saver? This isn't something I just started doing, I've been commuting for years by bike. Is there anyway I can justify this to her? Advice from women stashes?