Investors, tend to show proofs of their profitable investments, whilst usually avoided mentioning or showing proofs of their unprofitable investments or losses.
Honestly, I always don't want to mention about my losses with anyone.
That's being a man, we don't talk about our failure but we like to express our words on our success.
It's hard to win in gambling, either you are a player or an investor so if there is success, we love to boost it and it will only help us build our confidence.
Everyone is free to express their emotion but I like not to show some emotion in gambling, it's better to do it in a professional manner.
That is not being a man, that's being a western person, you guys in Europe or USA or even japan if I am not wrong tend to talk about your success.
In my country people always try to look like they are doing "just fine" and not anything else, there are billionaires in my country that literally went on TV and pulled out his pockets (which had nothing in them) and said "you probably have more money on you than me, I came from nothing and I will go to nothing" or something like that. That is extreme tough, we usually try to look like we are not dead poor or we are not super rich even if we are one of those things.
Culturally we do not talk about our success too much because its rude if the other person is not as successful as you are, we tend to talk about our failures in front of them to make people relate to us and understand us better.