In fairness, I've cried twice because of two students with disabilities. One had cerebral palsy and the condition worsened during their sixth form studies really significantly. They really wanted to go to university but they were too ill. I cried with them, in disappointment and frustration, and away from them because I realised that they weren't going to live very far into adulthood. The second student was/is blind. A real go-getter but frustrated and hampered by well-meaning people who wouldn't let them just get on with life. They did eventually but it was difficult. I cried in frustration about that one. But definitely not for what 'could have been' with them.