Answer:
***(I'm assuming this is talking mostly about European nations with the Middle Ages)***
I won't write everything for you but here are some key points:
- Religion today is much less impactful on the average bloke's daily life than it was in the middle ages, where almost everything revolved around a deity.
- In general, most people followed very similar patterns in life due to the overarching religion (catholicism). This is less true today, as there are many different religions which all can make people manage their lives differently.
- Atheism is more present today than in the middle ages, so people aren't necessarily as bound to the role of being a religious person, meaning they aren't confined to only doing certain things at certain times.