because 5500 sounds more genuine. The same logic applies to punctuality. You invite somebdy for 6 , chance are he will be late 10-15 minutes, ask to arrive at 5.45 and he will be there on the dot
I'm vaccines enthusiast myself and took my first shot already but making it compulsory for the whole population for relatively untested products would be risky at this stage
perhaps they are, I once almost stepped on one in Lumpini park ( of course because I was paying too much of an attention to a shapely ass of guy walking in front of me ) and she just moved away lazily without any fuss.