Excellent post! I enjoyed reading its entirety.
One thing I absolutely hate when going on a date with a girl is when they are focused on their phone. Thankfully this hasn't happened often, but I've seen couples or first dates where each person isn't even looking at the other and they're busy texting away. It completely destroys the intimacy and human interaction.
It works both ways, many men also claim to be on their phones for 'work' during dates etc. On the other hand, I feel that the excuse of work is also not very fair.