If your windshield has recently ended up with a crack, you really do need to consider getting it repaired as soon as you possibly can. The reason for this urgency is due to a number of factors. First of all, most auto glass cracks can be successfully repaired, providing you act on them in a timely manner, and of course this is certainly a cheaper option than having to actually replace your windshield. Remember though, with each day that passes, that crack is going to get bigger and bigger, hence the reason why you need to act on it immediately. The second reason is that strictly speaking, it happens to be illegal to drive a vehicle on public roads if the windshield is cracked. To the best of my knowledge, this is applicable in all States within the USA, and also in most other first world countries. Finally, if your windshield is cracked, its integrity is jeopardized, and that means it could in fact implode with little, if any warning at all, particularly if your vehicle is involved in a collision.
What many motorists don't realize is the fact that a windshield does more than just offer protection from the elements. In today's vehicles, the windshield is actually providing the vehicle both with a great deal of support. In other words, the glass itself is under a considerable amount of tension, which is exactly why cracks get bigger so rapidly if they're ignored. Ironically however, when it comes to vehicle maintenance, and repairs in particular, auto glass is probably the most neglected aspect of a vehicle. By and large, people just don't see auto glass as being important. As long as it keeps the wind and the rain out, there's nothing to worry about. Others, who are more responsible in terms of road safety, are often under the impression that auto glass repairs cost an arm and a leg, and as a result, they simply choose to ignore a crack. Admittedly, having to replace your windshield is certainly going to cost you a fair bit of money, especially if it's not covered by your insurance policy, but that's even more reason why you need to act quickly if your windshield gets a crack.
In many cases, although many drivers don't realize it, auto glass repairs are covered by the average insurance policy. Even if your own policy doesn't cover you, and you simply don't have the money to have your auto glass repaired professionally, you can nowadays purchase DIY repair kits. While they may not be the ideal solution, at least a DIY repair can buy you a bit of time.
Ultimately, if your windshield is cracked, you need to get it seen to as soon as possible. As with other types of vehicle repairs, it's always best to get quotes from several auto glass repair specialists before you make a final decision, bearing in mind that the cost can vary tremendously from one place to the next.