Curate, connect, and discover
Okay I've warmed up to the s2 finale even without the almond coffee theory. If you asked me "do you want to fall in love with the enemy or work with God and do good in the world" I'd answer the same.
Aziraphale wanted so badly to have his cake and eat it too. To have what he has with Crowley but in Heaven, without all the second guessing and doubting. A "nicer" turn of events.
Because this is what finally convinced Aziraphale to take the offer. He was still asking The Metatron about having coffee before the mention of Crowley back to Angel status, and he immediately asks him what would happen to his bookshop after Crowley refuses to join him. Because without Crowley there, Heaven isn't all that worth it alone.
And then he immediately regrets that thought and goes "nothing at all". How could Heaven not be worth everything?