It is especially fascinating during the first 3 years, when you slowly discover some unexpected links between the disciplines. When I discovered Noether's theorem I was in awe.
Then it gest more and more abstract, drifting away from the reality (I do not have QM here in mind but rather its evolution).
Thanks to the confinement we have in France due to COVID, I had the opportunity to take over a part of the duties of the National Education services :) Telling my children about mechanics and all basic topics was awesome. I got over excited several times and they had to cool me down.
Physics will always be my first love, but the future is elsewhere.