I always check it because the bird makes me feel like I have to. The birds are cute yet I feel compelled to clear them away. I'm weirdly better at ignoring the birds in New Horizons, I don't check it there as much
At the end of any day I open my gate to visitors I will check it in case someone has left a message. It always makes my day to see a message and I try to screenshot each one so I can still have it after the board auto erases it.