What benefits do micropython and circuitpython have over C++ for esp32?

[ESP_Sprite]

As usual, there's no 'the best' language, it depends on what you're trying to achieve. If you want the ability to prototype up things quickly and are unfamiliar with C/C++, MicroPython/CircuitPython may be your best bet. If you're interested in coding algorithms that need to run As Fast As Possible (and note that e.g. a WiFi-controlled switch is not one of those), you may want to go for C/C++ instead. If all else fails, go with something you're familiar with, so you can get started as fast as possible.

[Spile2]

I use c+/Arduino because of the wealth of examples and it appears one of the most widely used with plenty of support sites.