It's not that I'm against, the contrary, but in the last months I've experienced a physical server crash, a random kernel panic and a failed upgrade of GitLab: that all took 10/20 hours of work, didn't result in any data loss, but the downtime was clearly higher than what GitHub has (+ nobody on the team was on holidays at that moment), plus any maintenance like software or system upgrades has to be done outside team working hours to limit the impact.. real self-hosting is not that easy!