I was just asking if it was (more) selfish because a friend who doesn't know the extent of my SI said that people who ctb but fail waste the NHS resources.
In the context where you're found/reported by someone else, It's just not logically coherent:
'A' wants to commit suicide.
'A' doesn't want to be brought back to life by a medical team.
'A' attempts suicide.
A medical team brings 'A' back to life, despite his express wishes not to be.
That 'A' is wasting resources is not a logical conclusion of the above. The logical conclusion is that the medical team that are wasting their own resources, clearly.
In their own misguided belief system, though, they're not even, because in their mind they've decided that bringing you back to life is the right thing to do - therefore it's not a waste. So in no way are you wasting anyone's time.
The other context is where someone does something like drink a glass of SN and call the ambulance immediately on themselves because they changed their mind. This requires a much longer discussion. In summary, provided the person truly meant to suicide and truly only changed their mind after. I see absolutely no reason that this is a waste of the medical team's time. This is precisely something they exist for.
Your friend just sounds angry/confused over the fact that some people get suicidal. They lack true empathy.