I don't get how other people aren't suicidal

I'm in therapy, I'm taking medications and I still think almost daily about suicide. Nothing makes me feel happy and my life feels meaningless.I made friends because I thought beign lonely made me suicidal, I made plans for the future so I can have something to look forward to, I clean my room and go outside because it's good for me but nothing is ever enough. I asked my therapist why he wants to be alive, but nothing he told me seemed so fulfilling that it makes sense to keep going. I don't understand why most people don't want to die when life objectively sucks so much