Bitcoin profit? Don't tell anyone about that

Long story made short, I told some co-workers that I made about 400 euros by investing in bitcoin. Now this is a tiny amount of money, but it has not stopped some of my colleagues from asking me to share my gains with them. One of them is getting married and he suggested that I should give him a generous cash gift. Another one said that I made a promise to give him some profits a few months ago when bitcoin was at 3000 euros. I don't ever recall making such promises and even if I did, I'm not legally bound to give him anything.
I basically told all them to get lost (cuss words left out from this post) as I was the one taking a risk with my money and not them. Had things gone south nobody would have offered a helping hand and yet when profits are made everyone expects a share just because they simply know your name. There were a couple of people who only asked for help on how they can invest in bitcoin and I gladly pointed them to a number of exchanges.
Now Imagine if instead of a measly 400 euros, I made thousands or hundreds of thousands, the situation would have been far, far worse.
TL;DR: No matter how much money you make in Bitcoin don't tell anyone about it. Just explain the benefits of block-chain technology and stop there.