It's always perplexing when people who seemingly have everything going their way end their life. Reach out to someone if you're really feeling it.
I'll address a couple of things about mental health.
1. Stigma. The most common reason that people don't get the help they need is because of the stigma that surrounds therapy, particularly in men. Even people that are not suicidal or clinically depressed could benefit greatly from therapy. I've been in therapy for the last year or so and it's amazing the weight that I carried around. Small things that you would never register to someone that isn't trained in the field can have a dramatic impact on how we turn out as adults. Everyone, and I really do mean
everyone, could benefit from regular therapy.
2. Funding. Therapy requires co-pays, insurance, or completely out-of-pocket cash. The majority of Americans don't have access to insurance or the requisite funds to get help. This system should be overhauled completely.
3. This is directly related to your comments - rationality. Clinical depression, PPD, etc. alter the chemistry of your brain. It's rational to sit back and say, "reach out and get help if you need it." BUT...the chemical makeup of your brain isn't rational. It doesn't follow principles of logic. For many people that commit suicide stemming from depression, it doesn't even register in their brains to get professional help. For many others, see 1 and 2.
4. Shortage of trained therapists. There is an incredible shortage of therapists in the US (and I would guess the world, too). If you took the time to call around, there are many places in the US where you can't even find a therapist that is accepting new patients.
5. Understanding. This kind of goes with number 1, but have you ever tried to use a sick day to refresh your head? Most workplaces wouldn't entertain that as an acceptable reason to call off work. Ever expressed your depressed feelings via social media? Most likely not. People use social media to present a life that is entirely different than the one they actually lead.
I could add additional bullet points, but I think we are going to see a major mental health crisis in the world over the next decade. The COViD isolation did a number on many people. People express that isolation through anger, fear, violence, buying unnecessary things, etc. Basically, every unhealthy way to express emotion. In most of Europe, they have what's called 'burnout.' When you reach the point of burnout, you can take extended paid leave to recharge your physical, emotional, and mental health. That concept would get you laughed out of most offices in the US. There is a lot that we should do regarding mental health in this country, but very likely won't. It's incredible to expect someone in their mid 20's to worry about family, work, relationships, extracurriculars, bills, debt, physical/emotional/mental health without needing help.