Did you do sequential genetic testing? Why or why not?

We can't decide if we want to do the sequential testing or not but we need to decide soon. I'm 32 and everything is considered "low risk" right now by the OB. At 11 weeks, we've already had two ultrasounds. I know the results can be difficult to understand and often cause unnecessary stress. I'm just curious why anyone has made the choice to do it or not do it. To be clear, this is a nuchal translucency infrasound and blood draw at 13 weeks and a second blood draw at 16 weeks and according to the doctor, this is NOT the kind of genetic testing that will tell us if we have a Y chromosome or not--that's "high risk genetic testing." Super confusing!