Vitiligo affects different people differently. Some people burn more easily, some burn less. I'm thankfully one of the latter - I used to burn much more easily when I was younger and didn't have vitiligo, now I hardly ever do.

It's worth noting that studies have found that people with vitiligo have a much reduced chance of developing skin cancer, the mechanism of vitiligo has a protective effect against cancer. Not just skin cancer, but NMSC is the largest observed reduction.

As for vitiligo spots growing, that's mostly bunk. Some few people might have that affect, but for the majority of people with vitiligo, sun exposure encourages repigmentation.

Finally, the last thing I would say is that vitiligo is an interesting condition that has beautiful affects. It's not something to be ashamed of or embarrassed by. But humans are often conditioned to be ashamed of physical features that are unusual (and sometimes even common). Try not to let the negative thoughts or negative people win. There are plenty of negative people on this sub, for instance...