Not inherently, no, but the worst aspect about life imo is how grossly unequal everyone's lot is. If I had certain things, I would want to live, and yet I'm deprived of those things due to faulty biology, diseases I inherited, and an upbringing that I had no control over.
I feel immense jealousy towards people who are healthy or who have loving relatives, while I am all alone with nobody and forced to live a disabled 'half life'. Others who are blessed with good circumstances can't say anything more to that than, "I'm sorry" whilst they go back to living their full, enriching lives.
I think we are living in a point in time where people believe the basal state of society is an egalitarian and caring one, which provides for the less fortunate and ensures the weak are taken care of. After all, we hear all the time that disabled lives are just as valuable, right? But my experience with life has shown me the opposite, my life is inherently a nuisance to most people, and I am treated like a burden and a waste of resources simply for existing, when I don't want to in the first place.
If I had a healthy, abled body and relatives to support me, I would most likely not want to ctb. Yet, those are the cards that I've drawn, and I can do nothing to change this. Regardless, all I see is motivational speeches everywhere about how we control our own destiny and everyone can survive on their own, if you try hard enough. I wish that life were so fair and equal in practice.
In a situation like mine, I think life is not worth it, simply because the things that make it worthwhile are off limits to me. I can understand why life would be grand for a wealthy person who can do whatever their heart desires, healthy people not suffering from any conditions, or anyone who has a huge network of love and support, because those people are blessed with the good things in life. When every good thing is yanked away from you, it no longer feels like being alive, but merely existing.