I agree. However, I have had some good experience using weakly dotted paper for math. Then it is easier to draw graphs by hand.

Here is an example, 4 different dot sizes:

http://trondal.com/p1.pdf http://trondal.com/p2.pdf http://trondal.com/p3.pdf http://trondal.com/p4.pdf

You need to print them to see which one is suitable.