Given that 2 of the top 3 reasons why people leave the Forces are 'Impact of Service Life on family and personal life' (61%) and 'Spouse's/Partner's career' (43%) - I'd suggest the toughen up or leave posts will likely make people leave.
Like it, lump it, tell stories of the 70s and 80s, but it's why people are leaving.
Source -
https://www.gov.uk/government/statis...de-survey-2015