You might think this job sounds boring at first, but it's pretty darn cool and fascinating. Think of it almost like getting paid to do puzzles while hanging out with other people also getting paid to do puzzles. Add in that underwriting is an excellent career with significant earning potential, and it's a win.
An underwriter essentially figures out how to balance risk. Suppose something has considerable risk associated with it. The insurance price has to fit the risk, and an underwriter figures out that balance.
This career is for those that love figuring out problems, doing analysis, and working with a team of similar professionals. As an underwriter, you could be figuring out whether to insure homes, cars, or even really interesting businesses or institutions. Imagine figuring out how to balance risk and premium for an amusement park, manufacturing facility, or a university. Every day can be something new.