It’s sad, but true, that everyone wants money or something from you. That’s either directly, by selling you goods or services or having a tip jar, or indirectly, by generating goodwill that they hope you will remember in the future when you come to some purchasing decision or through some affiliate links. Some might want their ego stroked or their opinions shared. They may want to proselytise you, convert you to some ism or other.
Be aware of the motivations of others and of your own. You could betray yourself…