That’s a very personal question. Why save millions of unknowns you don’t care about over one person you know and love?
It’s a harder question to answer If it actually happened rather than sitting as a neck beard reading the question in a random fictional story. Oh sure you can say yes now because it’s not actually happening to you.
You only really know what you’ll do when it happens
Also Jegus Keith ate a boosted Bao and came out alive. Maybe he really is Barry’s rival