for the same reason, when the price of a computer, telecom charges, or any other stuff which i need to buy falls !!
It allows me to buy more of it ....
The above way of thinking is ofcourse not original ...kind of learnt it from warren buffett. But having internalised it, it makes a lot of sense
so every day when the market falls , i smile and hope that the stocks which i am wanting to buy and have not been able to, would be available soon at a good price