When stocks are attractive, you buy them. Sure, they can go lower. I've bought stocks at $12 that went to $2, but then they later went to $30. You just don't know when you can find the bottom.
In the summer of 1990, I was buying stocks and I was probably three or four months early there. But we had a great rally in 1991.
When even the analysts are bored, it's time to start buying.
The worst thing you can do is invest in companies you know nothing about. Unfortunately, buying stocks on ignorance is still a popular American pastime.