Am I saving too much?

I earn €3,700 net (I'm single, 35). Of that: - €1,200 for housing, fixed costs, fuel and groceries - €300 for leisure time (going out and other things) - €200 for vacation account [EDIT: in addition to the €2,400 that I transfer to the vacation account every month, there are bonus payments and other money left over from other planned fixed costs. This gives me €4,000-5,000 a year that I have available for vacation. No, I don't sleep in hostels and I don't just fly low-cost airlines. I pl