It could have killed you
As a SysAdmin I am used to being around potentially dangerous situations like people working with high Voltage/current power feeds, fire suppression systems, heights and dealing with heavy equipment. The cost of a mistake can be serious, and possibly fatal. However, these are all jobs where you need to hire a trained professional to do it.
There are plenty of other hazards to deal with. I have had several computers burst into flames, dodgy wiring (230V has a bite..), and there was the time a Doberman try to attack me on a site visit. There are also the less exciting/entertaining little cuts and bruises, tripping hazards and the ever present stress.