Self-host This, Subscribe to That

I'll go first with an example below.

What are y'all opinions as to what to self-host (on a computer, instance, or local computer) vs what is better to pay for through subscription or purchase?

The goal is to increase

• privacy from databrokers, ad brokers, corporate overlords, and from family and friends.
• security from threats below targeted nation state attacks, below zero-day vulns.

Example:

Self-host your calendar, contacts, and tasks Subscribe to email via protonmail to avoid all the issues with self-hosting mail servers