[patrickg_zill]

The approximate difficulty in running DNS server is the same as running a static HTML web server. Low difficulty.

[johne20]

Until new self-owned DNS server becomes victim of a DDoS attack.

[pjlegato]

If you think nobody will have much motive to run a very sophisticated / expensive attack on you specifically (e.g. Spotify), then self-hosted is great. You won't be taken out as collateral damage when they're targeting someone else.