4 reasons people do a PhD even though it is hard

People pursue a PhD even when they know it will be long, financially draining, and mentally taxing for a handful of repeatable reasons—most of them rooted in personal motivation rather than prestige. The most common driver is a love of challenge: some students discover they can push past “average” expectations, get hooked on overcoming difficult academic work, and then keep going simply because the hard problem-solving feels rewarding. For Andy Stapleton, that shift came after learning how to learn during undergraduate study and realizing he could “meet the potential” he set for himself, turning tough chemistry into a kind of proving ground that ultimately led him into a PhD in Australia.

Career payoff is another major reason, but it depends heavily on field. In some disciplines—such as bio/pharmaceutical areas or medical physics—PhDs can directly translate into higher pay grades and clearer career progression. In those contexts, a PhD functions less like a status badge and more like an investment with measurable returns over a three- to five-year horizon. Where that link is weak, the return on investment can be harder to justify, making the decision more difficult for people who are weighing costs against outcomes.

A smaller group pursues doctoral work because they genuinely love the subject at the level of daily practice. Stapleton describes meeting only a couple of people who treat their research topic as a hobby—working on it at night, outside formal duties, and sometimes even turning that passion into businesses. For most people, he argues, the attraction is often to the identity of being an expert or a “great researcher,” not to the nitty-gritty execution. Those who love the doing—the experiments, the iteration, the grind—are more likely to tolerate the sacrifices and still feel energized by the work.

Finally, a PhD can be a practical route to living abroad. Stapleton says his own decision was strongly shaped by visa realities: after an Australia year abroad, he found it easier to obtain entry through a PhD than through a standard working visa. He also emphasizes that moving countries for doctoral study usually requires relationship-building—he spent a year building connections during his undergraduate research in Australia before he could secure the right academic relationship for a PhD. On paper, strong grades and visible commitment (including volunteering or lab work at another university) can help, but genuine connections make the process smoother.

Taken together, the core message is that the PhD’s difficulty doesn’t deter everyone because the motivation is different: some chase challenge, some chase career advancement where PhDs are valued, some chase subject-level passion, and some chase mobility and visa access. For those who fit one of these profiles, the same hurdles that scare others become the very reasons they keep going.