I don't have anything against computers either.
Well Ok I do have some against computers, but as far as using computer programs for things like this, I see no real problem.
I just think it's good for people to be able to know how to do things without them, and I have a few reasons for thinking like This:
I am from a very conservative culture that is very cautious about technology
It seems entirely possible to me that there might be a not to distant future where we are going to have to learn how to live without a lot of the things we take for granted
And I think that we sometimes forget how to think for ourselves, and if we know how to do things without computers we will be all around better carpenters, even if we still use the computers
this is one of my reasons for studying geometry, not necessarily because I think we need to design everything with geometry, but because I think there are valuable lessons to be learned from it that will make me a better carpenter. (also because I am a nut! And my way of thinking may very well have more in common with that of the medieval man than most modern people)
As far as actually drawing perspectives, the biggest advice I could actually give is just practice a whole lot. I have drawn pictures of buildings since I was a little kid -they always fascinated me (me and y brothers were always building huts and lean-to's in the woods as kids), so I had the advantage of developing those skills early on. So it is admittedly hard for me to relate.
