For a phenomenon to become a real trend, it has to be accepted and loved by the masses.
And that for several years and not just for one season, because otherwise it would just be a fashion.
For this to happen, several factors often work together.
However, overriding moods, currents and behavioural patterns in society almost always play a role, so-called megatrends such as individualisation, globalisation, digitalisation or a longing for nature and sustainability.