I'd prefer shorter sentences for non-violent drug offenses.
Tom Hayes interned at UBS in 2001 [1]. Most interns are about 20 years old; we can thus estimate his age at about 35. A man born in the UK in 1981 is expected to live about 70 years [2]. Hayes' 14-year sentence thus represents almost 40% of his remaining life.
[1] https://en.wikipedia.org/wiki/Tom_Hayes_(trader)
[2] https://www.ons.gov.uk/peoplepopulationandcommunity/birthsde...