Your menu is a good example of the wide variety of tastes and likes customers have. I can’t imagine your menu being limited to one starter, main dish and just apple pie and cream for dessert. The same goes for your customers ordering preferences and eating habits. Customers like choice - we see this every day and in all walks of life.
Speed is the most important feature of any online store. If the speed is too slow, people will just not use the site, doesn’t matter it has great products ,low prices, the most beautiful interface, but if it takes forever to load, people will just go away. In the offline world, we often have to wait. Line in the bank, security control at the airport, checkout line at the grocery store etc. "I had such a great time waiting in the line for 3 hours" – no one ever said as people just hate waiting.