Which just further demonstrates my interpretation of the beta motto. Suffering makes you more alive to everything, including more suffering. Or (reading presence from absence), if you've experienced extreme pain, you'll be more aware of and appreciative of the lack of pain, or small/moderate amounts of pain.
Anyway. No, betas don't spend all their time suffering and conquering. And no, nobody wants to suffer per se, I guess. It's just that beta sees both suffering and conquering as inevitable/necessary, and sees the benefits therein. NiFe sees the "spiritual" benefit of suffering (but doesn't necessarily seek out suffering, just experiences it fully when it, inevitably, comes. Or perhaps notices more fully the suffering aspect of things that seem unimportant to others). And SeTi sees the necessity of conquering, because lots of things (even social customs and to a large extent, which morals are emphasized) boil down to who has the power and how they wield it.
Now, in practical terms, this doesn't mean that betas go around being evil masterminds. But it does mean that we tend to see life in fairly dramatic terms (I've heard this from *so many* betas, especially beta irrationals), and we do tend to wallow in suffering (as I detailed in another thread), and we do tend to try to gain power in whatever situation we're in (this can be as simple and innocuous as running for secretary of the college republicans, or something like that). Obviously, you can't take the mottos literally. You have to see them as exemplifying a trait that appears in various manifestations, from the extreme (i.e., adherents of suffering-based, self-flagellatory faiths are likely to be betas), to the mild (i.e., LSI Bob decides to run for Treasurer of his high school student government).