Since I didn't really like Google Hangouts for texting (it's very nice for video but I don't do video calls much outside work), I have mostly used other things - IRC, SMS, WhatsApp, ... - with people whenever they had those other things. But because Alice switched back to a dumbphone shortly after I gave her an iPad, we switched to using Hangouts and for a number of months she's been the only person I use Hangouts with frequently. Now I have really strong positive associations with Hangouts, because every time I see the Hangouts notification I know it probably means a message from Alice. Hangouts = joy, usually. This is making me like Google Hangouts even though it's irrational - it's not that the app/service has changed or become more likable. Huh.