Unique title page and unique description

I have unique for everypages in my site, but have no descriptions for anypage.

This's bad in Google optimization?

Description really isnt that important unless you really want it displayed on the serp pages. The titles are fairly important though for SEO

- just make sure you add plenty of unique content! Good relavant content that will be usefull, and start builing on that link bait niche!

but if have no descriptions for anypages is good for Google Search Results?

This will basically leave it up to google to find the most relevant information on your page for the given search. This can be good from a users point of veiw, especailly if there is lots of infomation on one page that cant all be diplayed in one description

IMO, a well-written Title and Description might lead to a good traffic but there's no guarantee of a good SERP ranking..

In On-page Optimization you must have unique Title and Description for your site. because Google snippet pages by Title and Description...

And if you have Good description maybe would drive traffic for your site even an conversion....

Not really...

Yes you should have unique titles for every page but you don't have to use meta-descriptions at all...

If you take care to ensure that all on-page text is well-written and the page is structured correctly - you can achieve a situation where you "offer" multiple snippets, aimed at each popular keyword/topic, thus making the best possible (targetted) description for many different search terms instead of just one.

IF you use them they should be unique to each page.

Description is really not that needed in optimization but it helps for the readers. Its an information for your site in order for the visitors to have a brief idea what your site is...

yeah right... but Content relevancy is important in optimization.

and for multiple snippets that you said, do you want that Google decides for you what Title and description showing in SE?

in my observation google usually snippet phrases on the inside content of the site.. that serve as description. so that's why i believe that it's not really "must" considering meta description on onpage optimization.

I have a tip to get unique title and asign to a part of descriptions.

This is good and save times

Meta descriptions are not that important unless you want specific text to show up in description on your SERPs. I think using those would let you set whatever you want to set rather than something from your content.

Using relevant meta description is minor positive tool in achieving better SERPs and can influence the click-through-rate of your SERPs, as it is you who is having control of the additional text bellow the page title.

I personally would not ignore this on-site optimalization factor, that is easily to control.