Any reason is a valid reason and I don't believe that there is really just a "bad" or "invalid" reason. Some things for others may be tolerable, but the same cannot be said for everyone else or even said "individual". So with that said, yes I believe that if your suffering is due to something that you cannot change or control and is in fact, negatively impacting your life such that it is unbearable, then I don't think that others should decide that your suffering wasn't enough. Everyone has different tolerance levels and limits for suffering, therefore, if inceldom is too much for you, then that reason is enough for you and you need not justify it for anyone.
I certainly agree that no one has the right to decide whether your suffering justifies suicide or not. It's impossible to really know how badly a fellow human being is suffering. However, I'm going to play the devil's advocate and disagree with you when you say that suffering is due to something that you can't change or control. It may as well be something you
mistakenly think you can't change or control. I'd say that the problems of the big majority of the members of this forum
can be changed or controlled. It can definitely be very difficult for people suffering from chronic or terminal illnesses, older people, or people suffering from PTSD; then it's more a queston of learning how to cope with the situation. The situation for the rest can be changed or controlled, at least in theory. Sometimes, moving to another city, avoiding destructive people, doing minor plastic surgery, using self-medication, doing meditation, excercising, or something else can be enough to alleviate the situation and allow for another shot at life. There's no use denying that the situation sometimes literally can be hopeless for a person, but I'd say that in most cases, it isn't.