Ways not to lock your bike

Went to Oxford yesterday. At least half of the bikes in the city centre are just freelocked. Out in the suburbs I saw a lot of bikes left in front gardens not locked at all. Crazy.

me dad lives in oxford and i go over there every few weeks.
its bizaar the same bikes are leant on fences and walls and racks for years at a time, not even touched by any owner OR any thief.
dad says the students just ride them on nights out then lock them up and never return.