Then download nothing and make it all yourself. Who are they to put conditions on your use? Who are YOU to put conditions on THEIR distribution? What makes your comfort more important than theirs? If you find use restrictions so all-fired offensive, then don't use the materials. If you find the possiblity of use restrictions so offensive, then don't download. Make all your own stuff and know that you can do whatever you want with it or commission people to do it as "work for hire", which means that you'll own all rights. Nobody forces you to use other peoples' work in your own work.