Designed - mid-late 1970s
First flight - 1981 (29 years ago)
IOC - 1983 (27 years ago)
Revealed to the public - 1988 (22 years ago)
First combat - 1991 (19 years ago)
Retired - 2008 (2 years ago)
25 years for an frontline combat aircraft that can only perform one mission, zero capability to defend itself from other aircraft, has no radar, is subsonic and can only carry a maximum of two bombs is hardly quickly.
Yup, you'll get an answer to that, just wait right here
And in case of emergency, break glass....
More like they were retired earlier than the planned 2011 because