The upsides of self hosting:
AWS was down - my server worked.
Azure was down - my server still worked.
Cloudflare was down - my server didn't care.
Hetzner was down - my server was still chugging along.
The downside of self hosting:
Two years ago, after 12 years of 24/7 operation, the motherboard died. The server was down for months, because it was a 1000km drive to get to it...
Pick your poison. 馃槄