By a large margin, definitely. I was hesitant to attempt repairs on my daily before I picked up car #2 because it was my only mode of transportation. Being able to switch between the two now gives me a much wider time margin for potential errors and my feelings about DIY repairs have gone from "keeping this car alive is going to bankrupt me" to "this is a fun hobby."
When confidence in repairability is low and stakes are high, it probably makes sense to opt for a shop.
It has nothing to do with negativity. Maybe OP is accounting for an efficiency loss rate, but they didn't mention it, so I brought it up. What good are inaccurate calculations?
It matters if OP is multiplying the hours they spent times $100 rather than the time the mechanic would quote (usually from a flat rate manual) times $100/hr.
If a pro mechanic would charge me $100/hr times the book time of 1.3 hours to change pads on my car and I take 3 hours to do it, I saved $130, not $300.
For simple jobs, I can usually match or slightly beat the book rate. Because I don’t have a lift, a lot of undercar work takes me loads longer.
When confidence in repairability is low and stakes are high, it probably makes sense to opt for a shop.