The better you are at managing your emotions, the less emotional support people offer you. It's not cruelty. It's perceptual bias. People take your composure at face value because it's efficient for them to do so. A study published in the Journal of Personality and Social Psychology found that people consistently underestimate the emotional needs of those they perceive as high copers.
There's a concept in relational psychology called the "false self," originally described by Donald Winnicott in the 1960s. He argued that children who learn early on that their authentic emotions are unwelcome develop a compliant, socially palatable exterior - a self designed not for expression, but for survival. The false self smiles when it doesn't want to. It says yes when it means no.