I was on a Giant Cypress for about a year, and used it for 20 mile rides or less, and as a fair weather, daytime commuter.
Then I bought a Giant OCR1 and my whole attitude towards cycling changed. Over a year later and many thousands of dollars shelled out, I love it, and it has changed my life. I commute, I do 70 mile rides, I get around everywhere on it, have lights and full fenders, and am probably the healthiest I've ever been (and I grew up on a cattle ranch).