if you want to store multiple IPs or ports and match against the collection by iptables; dynamically update iptables rules against IPs or ports without performance penalty; express complex IPs and ports based rulesets with one single iptables rule (to rule them all!), then ipset is for you.
if you want hallucinations & paranoid delusions, then meth is for you.
Who would win a tag team wrestling match btwn Indiana Jones & Superman vs Han Solo & The Hulk? (Which is all the more interesting b/c there'd only be 3 total people in the ring.) (oh no, an apostrophe!)