- waiting for javascript to load is not considered latency but kills user experience

- depends how you do it

- not all apps need to be SPA but also you can render fragments if you really want

> - higher latency

Which is a tradeoff, and it's okay as long as the client doesn't notice it.

> - uses more server resources per-client, therefore it's more expensive

Which is okay as long as the added expense is inconsequential (which it is).

> - harder to do SPA-like apps

Why?