Google Play Store containing Adult Content

What is more difficult than convincing your wife that you don't need a haircut?  It is finding a good application  easily in Google Play Store!

To top the difficulty , there are enough adult content freely available in the play store.
Now imagine , browsing the Play Store with your four year old daughter to find her favorite puzzle game and finding the adult games with nude pictures listed as the 'top free' apps.

Check the screenshot below, this is taken from the 'Top Free apps'

I do understand that , people of all age groups use Google Play Store. But being a responsible company, why cant Google set the default content filter to avoid showing the adult content?

Until Google realize this, we will have to explicitly set the content filter to avoid adult content.

Open Google Play Store
    Go to Context Menu
    Click on Settings

Click on 'Content Filtering'

Select 'Every one'/ 'Low Maturity'

Click on 'OK' and provide a PIN when asked for.
This should prevent the adult content from appearing.