Why are some roofs on churches flat and some have spirals?

Flat roofs are often found on churches with modern or minimalist design styles, while churches with more traditional or historic architectural styles may have steeply pitched roofs and spires or spires. The design of the roof can reflect the architectural style of the church, as well as the cultural and religious significance of the building. Flat roofs can provide a more contemporary aesthetic, while steeply pitched roofs and spires can evoke a sense of grandeur and reach towards the sky.