I have a question about a possible logical fallacy. I know some people and have heard others use this type of logic or illogic before and it seems very illogical to me.
Example:
Perfection can't be achieved so there's no point in working towards it.
You can't get something 100% clean so why try.

The basic premise seems to be that since you can't achieve the extreme of your goal there is no point in working hard at it.

It seems to clash with my logic of:
I can't get something 100% clean, but I will get as close to that as possible.
I can't achieve total perfection, but I am happy with getting as close as I can and will work towards it.

What's wrong here?