How are WW1 or WW2 era bombs still regularly found in gardens and houses around UK and Europe?

Question

The day after or week after these were dropped 60-100 years ago, did people not think, there’s a bomb over there we should make it safe.

Edit: I singled out the UK because they discovered a bomb from World War Two today in Plymouth. I know the UK is still in Europe.

In: Other

Answer 1

The scale of the war is unimmaginable for us today.
For reference: currently about 16k russians are reported to died in Avdiivka. Thats MORE than combined fighting force of our military (Czechia, totals about 30k active duty)

For example, battle of Berlin in 1945 had almost 4 million soldiers available for both attack and securing nearby areas.

Stalingrad totalled for almost 2 million casualities for both USSR / Nazis.