Oxfam doesn't seem to agree with you, and ranks The Netherlands as having the best diet [1]. Dutch cuisine might not be very diverse (boiled potatoes, boiled veggies and some meat), but the Dutch eat a lot of food from other cuisines; pasta and rice dishes are very popular in the Netherlands.

[1] http://www.oxfam.org.uk/what-we-do/good-enough-to-eat