Why then go out and start learning! It's easier to learn as a youngster but it's never too late to learn and all that.
If you'll take my advice you'll rent for a while before buying though. A decent violin is quite pricey and it'd be a shame to spend loads and then leave it hanging on the wall. If you do buy, I suggest you bring along someone who knows their way around a violin. A first violin is a rather tricky balance between getting one that's cheap so it isn't a huge waste if it never really gets played and getting one that sounds good so the guy learning won't get depressed by bad tone that isn't his fault.