There's no need for seafood, as I find the
evidence favoring lower complete protein diets from longevity studies
compelling, and there's nothing unique to seafood that can't be found as an ethical
supplement (eg, algal oil for EPA / DHA, synthetic taurine).
For as long as the internet rumor mill has tried to drag creatine through the mud, it's never been able to produce
compelling evidence for most people to avoid the
supplement.