The main reason for migrating to the Magento 2 platform is that Magento 1 is no longer the focus of Magento Inc.

Naturally, its support will continue for several more years (until 2018), but it will be nothing more than a fix for critical bugs and security issues.

Magento Inc will no longer invest in the development of Magento 1, nor will it expand its functionality or introduce any modern technical solutions.
Help in migrating from Magento 1 to Magento 2 https://dinarys.com/magento-to-magento2