Why be safe?
Because being in danger doesn't mean you don't deserve care. Wanting to die and being in danger aren't always the same thing. Some of us want the pain to stop, not necessarily our entire existence. Some of us are just too worn down to fight anymore. And yeah, some of us are certain we want out—and that's valid too.
But "be safe" doesn't always mean "don't die." Sometimes it means: don't get hurt before you're ready. Don't let the method decide your ending. Don't act from panic when you deserve peace. Don't let someone else interrupt your autonomy just because the timing wasn't right. Danger can take away your choice, and your choice matters more than anything else in this.
So be safe—not because life is sacred, but because your decision is. And you deserve to make that decision on your terms, not from a place of pain, fear, or impulse.
Be safe enough to stay in control.
That's all it ever really means.