Hey Sush, I'm with you 100%
I think this little'un, who I believe was the most advanced embryo at Day 2, was going to make it whether I had transferred then or at Day 5.
As you know, I'm a fatalist all the way. If an embee is going to stick - it's going to stick no matter what.

Some interesting stats:
1978 - First IVF bub in the world (27 years ago).
1980 - First IVF bub in Australia (Monash, 25 years ago)
1996 - Monash celebrate 3000 births (16 years later)
1997 - Monash announces first blastocyst bub

So, Monash helped 3000+ women become mums before blast transfers came along.

If the "have to go to blast" mindset had existed then, that's 3000+ bubs who would never have been born. And, that's just one clinic. In one city. In one country. We can all do the sums ourselves...

We are all different in our belief of when life begins. For me, it's at conception. The thought of any embee being 'discarded' because it did not make it to 5 days fills me with much despair and sadness. Every embee is precious.

My sermon over!