A lot of people aren't actively seeking it. I'm not, and I have a number of former coworkers that have successfully built startups (either been acquired or running profitably) and only about half of them took seed funding.
If you're good enough and dedicated enough to execute on your ideas yourself, chances are you were paid pretty well in your past life and have decent savings. (If you weren't, it often makes sense to do a two-step path into a startup, where you write a side project that is impressive but not lucrative, use that as leverage to get a Google/Facebook/etc. job offer, save up a bunch of money, and then seed fund yourself.) And if you've got decent savings, it can often make more sense to avoid the dilution and investor-relations hassles that come with taking investment.
If you're good enough and dedicated enough to execute on your ideas yourself, chances are you were paid pretty well in your past life and have decent savings. (If you weren't, it often makes sense to do a two-step path into a startup, where you write a side project that is impressive but not lucrative, use that as leverage to get a Google/Facebook/etc. job offer, save up a bunch of money, and then seed fund yourself.) And if you've got decent savings, it can often make more sense to avoid the dilution and investor-relations hassles that come with taking investment.