The reason why you shouldn't force someone to invest in bitcoin?
I just replied to a similar thread few minutes ago so I won't want to repeat myself but just quote myself here for reference.
Some challenges are there when you tell people about Bitcoin, not all of them will want to buy so you don't have to force them to buy because doing so you'll be giving them the wrong impression of the market that its like MLM that you have to bring someone in order for you to get paid. You are also making yourself vulnerable because they will always harass you when they don't make profits which the fault is always because of the things they did but you'll be the one to receive the blames. There's a good feeling if you successfully influence someone and they get the benefits of buying Bitcoin and the industry overall.
Did you think is good to force someone to invest in bitcoin?
You don't force someone to do something regardless of the fact that it'll be beneficial to the person, always allow people to take the decision that will better their life with their own hands because it'll also add to their confidence in making future decisions. If you do things for them, they won't be able to grown up and will always be dependent on people for that extra push that they need to succeed in life.
What is the disadvantage of forcing someone to invest in bitcoin?
Excluding the blames for their own failure, you might get physical attacks and it can result to lost of life. People don't like losing money and they also like passing the blame for their failed life on others and they can use that frustration to disturb you by making your own life miserable if it doesn't end in death. You also lose someone that will believe anything else that you tell them because they'll begin to doubt you.
Did you really think the person is ready to bare the risk that is involve?
This is another reason why you don't force them but allow them make the decisions with their own hands because they have to be financially ready to invest before they start buying Bitcoin. Forcing them to buy when they aren't mentally ready for the market is a disaster in the making.