@Pia since there is no wrong doing in being ordinary, I don't think anyone should feel guilty for it.

But perhaps in your friend's mind an ordinary life means a dull and dreary existence. If so then it is understandable that some negative feelings would be attached to that. Not guilt but perhaps a feeling of dissatisfaction

Dissatisfied feelings could be useful to prompt you to desire change and even make changes that result in a more fulfilling lifestyle.

I hope this makes sense to you.