Well that could be a good thing if it was like that everywhere, but it is not, so users and growers have to ignore that part of the law in their countries with the fear of the consequences permanently sitting in their neck.
But almost everybody keeps on doing it. Than what is wrong with this relative harmless drug that makes the users to the hunted game of the law. My personal theory is based on an, after all quite old conspiracy of the energy, media and money industries. I'll write more about that in a different place on this site, here we ignore the legal part and go for the fun of growing and enjoying the flowers.
I have been growing cannabis for many years for my pleasure. but then in general I do like gardening - its good for the mind to stay in touch with the earth somehow and its even better when it has a purpose. Not just for the visual effect as flowers, also for the awareness about what we fill into ourself breathing, drinking and eating. It is a different experience to know that you made it yourself.
Cannabis in itself is a beautiful and useful plant that can be used for a lot of different purposes. More about these other purposes in the category HEMP

Some pictures of homegrown in different stages

In the weblinksection of this site you can find a list of approved seedshops
Original cannabis seed strains for Outdoor use are availiable at Sensi Seeds