We all have an interest or a hobby that we like to do on a regular basis. In most cases, our hobbies have nothing to do with our work.
For example, you might be a passionate collector of stamp, the compilation of rare and unique stamps from all over the world. Or maybe you like fishing, and having visited some of the most unique sites in the fishing world and draw some useful tricks fishing along the way. Do you also share in the joy of painting, quietly creating your masterpieces of art in his basement every weekend.

Every time you buy a new domain, it will be to your advantage to think search engine optimization right at the start. When it comes to make your site more valuable to a buyer which can show constant traffic, or for the sake of your income (for which you need good, and we hope that the levels of traffic growth), SEO is necessary unless you are simply going to promote from PPC.