no gambling links for my multiple niche blogs

Lately, I received some offers from companies who expressed interests in placing links of gambling sites on my multiple niche blogs. While the opportunity may be enticing, it is my conviction not to place gambling-related text links on my blogs, especially the hard core ones. My dad was a gambler and I watched how he destroyed his own career and family life with his gambling habits so I'm not keen at all to watch another person suffer from that. Some people start multiple niche blogs for this reason and I have no right to comment. But as fas as I concerned, my conviction towards this stays.