Unable to travel after getting Schengen visa

[picque_shakira]

I recently got issued a Schengen visa to travel alone to Italy for tourism and wasn't able to travel because I fell sick.

I am still sick and don't think I can travel within the visa's validity period.

Will not using a Schengen C visa have any negative effect on my future visa applications to Europe and other countries?

My reason is genuine after all, but I am just worried if it is frowned upon to not use a tourist Schengen visa.

Thanks