You never know when you will be run over by an 18 wheeler (or the next virus)!I had this same struggle when I decided to take delivery of my MY last June. I've enjoyed the car so much over this past year that I can say, without hesitation, I'm glad I didn't wait. With the rapid improvements all Tesla models have enjoyed over the years, logic will tell you that the old model values will plummet. Who would pay top dollar for a 2-3 year old car with inferior tech??? Well, just look at the prices for used Teslas over the years. For whatever reason, used Tesla cars hold their value quite well.
Tesla dropping the price of a new model hurts the resale value of an older model (naturally), but the newer tech doesn't seem to negatively impact it much.
My advice is to buy the car when you want to and enjoy it.