It's not really idea to do all these to people except you'll be getting some commissions as well as referral bonus from there investment, me personally won't waste my time telling people to invest in Bitcoin for free.
If someone has more interest to cryptocurrency space and the technology fueling it, then the user can go extreme to do a lot of research on his own without you preaching to him.
Crypto is already transparent so it's there for everyone to take part, plug in and create something out of your own imagination.
I don't know why you called sharing the knowledge of Bitcoin a waste of time? If I may ask, how did you learn about Bitcoin and this forum? Through someone or you just stumbled upon the website? If it is through someone, did you pay for such information? As must as necessary, we have to keep telling people about Bitcoin as that is the only way more people will become aware and we achieve main stream adoption when more use cases are also discovered for Bitcoin.
Sharing knowledge about Bitcoin is not a waste of time at all, but it should be done with our interest so that a person can trust Bitcoin. Everyone has learned about it in detail through the forum, so we will also try hard to tell others about it and they will come and practice their knowledge here. We should introduce Bitcoin to as many people as possible and so that people can benefit more from it. The way we see Bitcoin customers every day, it is certainly a trustworthy coin among people, in that case, if we want, we can discuss Bitcoin with people in our area or neighborhood, this will be a positive example.