Ok, fair enough. I have enough other reasons to be against roundup without needing to cling to believing it's carcinogenic. Thanks!
For the record, the other reasons are to do with the larger ecological impact of roundup-based practices, such as harm to soil fungi and bacteria, and collateral damage from runoff or wind. Plus, there were some studies finding it may cause harm to intestinal lining and such, even if it's not actually a carcinogen.