It happens. I use them maybe once a month for the last year and I've only had to wait once. It cost me 10 minutes or so. If you're unlucky you might live near a particularly crowded supercharge and have longer waits. I think the vast majority of owners charge at home 90+% of the time.
- do you find yourself chatting with fellow Tesla owners while charging? Some people hang around their cars while they charge but I tend to grab a coffee or do some shopping. The chargers are usually near at least a coffee shop if not an entire mall. With the exception of the occasional long trip, I'm usually not staying long.
-are the superchargers free to use For some people. My model 3 didn't come with free supercharging but a lot of the chargers are sponsored by the local mall (I've seen a few tourist centers with free charging too). The only time I've paid it cost about $6 for a roughly 75% charge (200 to 240 miles).