Why do some dialogue options have percentages next to them

1% bonus experience might not seem like much - and it isn't - but there is one particular benefit it has over every other benefit - namely, there are very few ways to get bonus experience.

The other buffs can be earned by, say, visiting the shrine of Mitharu for +5% health / mana, or Vraekor for 6% bonus fire damage / resistance.

But there is no "No God" shrine (it's a bit of an oxymoron, isn't it?), so the only way to get that bonus experience is to be an atheist.

Choosing to follow no god gives a minor (but tangible!) benefit for those min-maxers who want to race to the max level as soon as humanly possible.

I don't really think bounty really matters and paying fines or going to jail is pointless, it wont cause you many problems just to run away or keep killing guards and civilians. My current bounty is at 4 million and the only problems I face are when I try to re-enter a city that I recently killed a bunch of people in like the past hour or so, but the agro in the city fades away.