I just did the $50k reservation. I got into bitcoin back in 2013 when they were only $80 apiece (just hit $8,100 today) so, technically, my reservation had a cost basis of about $500. (Funny anecdote, I got my first bitcoin ever from the brother of one our forum members and current Roadster owner. When he gave me that first bitcoin, it was worth about $10.)
My wife was annoyed but....I will get so much pleasure simply anticipating this car for the next three years that that alone is worth it to me.
I'm getting pretty old, I turned 56 this year, and really starting to count 'how many good years I have left'. I don't know how long someone is going to have to wait if they aren't a day one reservation holder, but I would like to get the car before I'm 60 goddamned years old if at all possible.