Here are the most common reasons that people like yourself choose to hire a caterer:

1. The reduction of stress on the day itself. Knowing that a professional is in charge of the food allows you to enjoy your event and concentrate on socialising without spending all your time in the kitchen, laying out food, and so on.
   
   
2. The time saved in planning, shopping, preparing and serving the food, and cleaning up afterwards. This allows more time for other aspects.
   
   
3. The amount of equipment required to feed a large number of people can be quite daunting. Most people do not have a dozen or more serving platters or cutlery and crockery on hand for dozens of people to eat at once.  We can provide all of this if required, and we take it away with us again at the end.

There are numerous other reasons such as the quality and variety of food, its presentation,  and having trained serving staff if required.  For someone running multiple events a year, they know from experience that hiring a caterer is the sensible option for most situations.  Unless you are deliberately wishing to show off your cooking skills to just a few people then consider hiring a professional caterer to help your event run smoothly and with far less stress.