I can afford to pay others to help, but at the same time I know how to do myself 90% of what I need. That means I can fix something that breaks at midnight and have a professional do a permanent fix, if needed, in the morning. I can also fix by motorcycle or mountain bike when it breaks in the middle of the mountains 20 miles from the closest village, calling for help is many times not an option due to lack of phone signal. Yes, it is nice to do only what you do best, but it's not a good idea to be ignorant of skills that may be essential sometimes.