Even for something as straightforward as getting new tyres fitted, I just pay the professionals.
Sure, it's more expensive than doing it myself. But it gets done better, and it's not sufficiently more expensive to justify the grief and hassle of doing it myself.
Of course, they don't always get it right: Last week the two new tyres I had fitted were put onto the front wheels of my car, not the rear.
I didn't even look at the wheels, just noticed there was vibration at high speed. So I took the car back to the garage today, they spotted the issue, realised they'd thrown away my otherwise good front tyres, and as a result I now have the new tyres on the rear wheels as required, and a new pair of tyres on the front wheels too at no charge.
Good customer service, and worked out far cheaper than doing my own tyres, even though I'd have replaced the right ones to start with.