Its not a problem & as for sirens, we only hear the odd one if traffic is built up, most of the time they have them switched off.
I live next to a heli pad at our local hospital, we have maybe 2 helicopters fly low directly over our home a week if that!
They only seem to fly low over our place,if they need to, for a reason and I guess that reason is to save time/lives, so that’s fine with us.
Mostly at the weekend too, picking up born again bikers 😉
Our kids find it a buz racing out to the garden to feel the down draft & wave at the pilots, who wave back most times.