What is the purpose of checking engine oil level on a motorcycle before a long ride?

1. Low engine oil causes catastrophic metal-on-metal friction, engine overheating, and sudden piston seizure which locks the rear wheel instantly
2. A low oil level simply reduces fuel economy and can be corrected at the next service
3. The oil warning lamp gives sufficient notice, so a manual check is unnecessary
4. Topping the oil above the maximum mark provides a useful safety margin