Competition in Business
You already have a branded domain that is ranking because of your hard-earned SEO work. Your competition may be able to outrank you with the right name and less SEO work. It can make good business sense to purchase a geo domain and either set it up as a 301 redirect to take advantage of the type-in traffic or set it up as a Lead Generation site. With the cost of renewals being less than $20 it may be wise to prevent your competition from getting it.