Poker may have good life lessons, but I would hesitate to wholeheartedly recommend poker to children because the worst-case scenario for the player is much worse than for a player of chess. From a research review paper [0]: "In the majority of situations, gambling in adolescence does not appear to have obvious serious negative consequences; however, in a number of cases it does. There are several risk factors for adolescent problem gambling, including parents with gambling problems, an earlier age of first gambling activity, and greater impulsivity. Children of problem gamblers tend to gamble earlier than their peers."<p>A worst-case scenario for a player can arise due to "tilt" in poker, aka a losing streak magnified by negative emotions. From another review paper [1]: "Tilting is defined as “a strong negative emotional state elicited by elements of the poker game (e.g., “bad beats” or a prolonged “losing streak”) that is characterised by losing control, and due to which the quality of decision-making in poker has decreased” [...] After a significant loss, tilt occurs in three phases: (1) a dissociative phase (disbelief, “unreality,” unwillingness to “accept” the events), (2) a phase of indignation and negative emotions (feelings of injustice and unfairness), (3) and the chasing phase."<p>Since real money can be at stake, especially if a young person starts to play poker online, the consequences can be far worse than for a person who develops an unhealthy relationship with chess. Though a research review paper suggests that these worst-case scenarios do not happen to the majority of young poker players, it can still happen to a significant number of them.<p>[0] <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2945873/" rel="nofollow">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2945873/</a><p>[1] <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5387767/" rel="nofollow">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5387767/</a>