For perspective: 2 year old MacBook Pro 2018 256Gb. (Mostly used for development purposes)

  Critical Warning:                   0x00
  Temperature:                        37 Celsius
  Available Spare:                    100%
  Available Spare Threshold:          99%
  Percentage Used:                    42%
  Data Units Read:                    892,035,478 [456 TB]
  Data Units Written:                 786,976,871 [402 TB]
  Host Read Commands:                 4,989,739,415
  Host Write Commands:                2,554,081,641
  Controller Busy Time:               0
  Power Cycles:                       137
  Power On Hours:                     2,132
  Unsafe Shutdowns:                   70
  Media and Data Integrity Errors:    0
  Error Information Log Entries:      0

And a 6 month old Intel i3 MacBook Air 256Gb

  Critical Warning:                   0x00 
  Temperature:                        48 Celsius
  Available Spare:                    100% 
  Available Spare Threshold:          99% 
  Percentage Used:                    1% 
  Data Units Read:                    59,113,734 [30.2 TB]
  Data Units Written:                 47,319,687 [24.2 TB]
  Host Read Commands:                 596,571,150
  Host Write Commands:                318,913,173
  Controller Busy Time:               0
  Power Cycles:                       93
  Power On Hours:                     384
  Unsafe Shutdowns:                   21
  Media and Data Integrity Errors:    0
  Error Information Log Entries:      0