Assuming it takes you 30 minutes for at least one of your weekly grocery trips, why would you make a habit of sitting in the car waiting for it to charge?

Two reasons:

(1) I've been driving EVs for 8 years now and have yet to see a DC fast charging station at a grocery store. Electrify America uses Wal-Mart and Target as site hosts often, but not everyone does their grocery shopping there. Grocery stores mainly have L2 AC charging stations, which only put about 10 miles of charge in a car in 30 minutes.

(2) DC fast charging stations on almost every charging network will charge idle fees if you remain plugged in after you're done charging, or after a set time like 20-30 minutes, as they want you to move and let the next customer charge their car. So you need to sit in the car and move it when you're done, or it will become unaffordable.

Definitely some regional variability there, as this doesn't exactly match my experience, but it's close enough that I concede they are good points. To really get people on board who don't have good at-home charging available, there will need to be progress on both of those points.

in cities like nyc you are not parking in parking lot, you are parking in the street

Charge at home. If you can't now, eventually all the landlords will be racing to install charging because demand for it will rise.

when that happens ill consider

In the meantime, switching to a non-plug-in hybrid (HEV) will reduce CO2 emissions and use as little as 5 liters per 100 km.