Enetering security code EVERY time I use Zoom

I have been a zoom customer for many years. Using the SAME emaill, SAME COMPUTER and same internet for the whole time.  So why , if I use zoom EVERY DAY, MULTIPLE times a day, do I need to enter a security code from my phone EVERY TIME. This is ridiculous.  Shouldn't zoom recognize all this at this point? Does everyone experience this? its time wasting and unecessary.