Toys that fire things

For some unfathomable reason, I was, the other day, thinking about the toys I used to play with as a child. In particular, a toy tank that fired a missile. I remember being upset that I'd lost the missile from the tank and hence the toy was useless. Why don't the manufacturers make the toys with mini waterpistols rather than firing a missile? That way there would be no lost fun from running out of ammunition, and much less risk of taking out an eye!