When you are married.
If you are not happy and you know you never will be. I was married for 8 years before going thru a divorce. Feel free to message me if you need a friend to talk to :)
if they are gay abusive on drugs or a ***** ;)
Read the book : Too Bad to Stay, Too Good to Leave. It has a very sensible approach to solving this dilemma.
Absolutes are few and far between... otherwise we'd ALL make the 'right' choices all of the time.
No one can ever 100% know anything, all you can decide is what you are willing to live with, and hope to hell you have the right information to even make those decisions in the first place. The only advice I can give you is get to know as many married and divorced people as you can - you are almost always following in someone else's footsteps
A sense of futility.
Emotional distance that cannot be bridged.
Any kind of abuse, from physical to mental and verbal.
Infidelity that cannot be forgiven.
Mutual conclusion that it is the best course of action.
I don't know anyone who was 100% sure. Personally I would do everything I could not to go through a divorce. I've been there, done that.
It's the place you decide from.... and do you hold it or let it go
If you don't feel safe.
If you don't feel your children (if any) are safe.
If you don't recognize this person any more.
Before any infidelity.
When it can't be fixed any more. When you give up. Disgracefully, shamefully weak.