Well I think the point here is that in hindsight if i had made the trade as planned it would have profited, but due to emotion, i would trade when i shouldn't, or not make a trade I should because of fear. The point of a bot would be to execute those trades as planned without overthinking it or acting out of fear/fomo.
But the bot wouldn't be affected by FUD and or panic because of certain news, whereas people do. People panic = People sell = Price dips/crashes. Can a bot react to certain news? No it can't. News(both positive and negative) has the biggest effects on the markets in my opinion; a perfect example of this is the recent news about China banning ICOs and possibly exchanges(unproven). Just saying.