i don't know any answers to any of those questions Gracie, and as I get older I'm sure they will wain on me more in wanting to know those answers....but as I sit right now, most everyone I know of that has committed suicide, has done so because of depression or bipolar not taking meds, and I KNOW they could have been helped and happy and alive again inside if they had been treated.Why does one have to be mentally unstable to commit suicide? Are those with terminal illnesses mentally unstable that choose to die with dignity? Maybe they just flat out don't want to suffer or be a burden. Or maybe there is nothing really left they can do, due to extreme old age, homeless, broke, etc.It's killing oneself, it's murder, only no time to repent, feel remorse, asking for forgiveness etc etc etc....you're already dead.....
Setting that aside, I believe in most cases of suicide, the person is mentally unstable, with acute depression, and feels there is no way out...other than offing oneself...
God, is a loving, caring, understanding and merciful God... under those circumstances, imo.