Do people who share your view see you as more relatable or trustworthy because of your opinion? Not all opinions or even values make much of a (positive) difference. For example, I could point out that I think people should be treated as equals regardless of their gender or sexuality. Most people who agree with that don’t think much about it. It’s such an obvious thing to them. So, telling that doesn’t make much of a difference to people who agree with me. However, many people who disagree with that might think I’m crazy.
Purchased lists are ineffective, and they impact everyone else who uses Mailchimp, too. If you send emails to a list of people whose contact info you bought, many of the emails will get identified as spam. Some spam filters will flag a campaign if anyone with the same IP has sent spam in the past. When you use Mailchimp, your email is delivered through our servers, so if one person sends spam, it could prevent other users’ emails from reaching inboxes. But by forbidding Mailchimp users from using purchased lists, we increase deliverability for everyone.
When you're using email as a marketing tool, you're working on a pretty personal basis. This isn't ‘drive-by' stuff -you're directly targeting customers from their inboxes. There's a huge amount of potential which comes with this kind of marketing... but you'll only reap that potential if you REALLY understand both the marketplace you're operating from, and the audience you're talking to.