There is no end for Lord Brahma Dev even after the completion of this Kali Yuga, since after this Yuga, Lord Brahma would be merged with his father Lord Vishnu, and thereafter, he would be in the form of Lord Vishnu itself.
In some Puranas, it was stated that the present Brahma would retire from his duty after the end of this Kali Yuga and after that, Lord Hanuman Ji would become the next Brahma. Though the details mentioned are believed to be true, but however, there is no re-birth for Lord Brahma, since he was the first and foremost son of Lord Vishnu. Whoever worships Lord Vishnu in the next Yuga would also be treated as the worshippers of the present Brahma, since both of them would become one and the same.
Lord Brahma contains the features of Lord Shiva and Vishnu, and though in some Puranas, he is mentioned as a subordinate to Vishnu and Shiva, yet, Lord Brahma has contained independent powers to do anything on his own. However, due to his noble characteristics, he used to worship Shiva and Vishnu, by considering himself to be inferior before them. In the Brahma Purana, Lord Brahma is mentioned as the master of the entire universe, and in fact, it was mentioned, that only through his powers, Lord Vishnu and Shiva are able to discharge their duties effectively and efficiently.
Lord Brahma has got the capacity to lift the entire universe on his shoulders, but since he is restricted to do only creation work, he takes care of only that work. During the times of dangers, similar to reciting the word, MA, mother, for help, we can also recite the word, Oh My dear mother Brahma Deva, please help me, like that. Most of us are not giving much importance to Lord Brahma Deva, by considering him only as a demi-god, but actually he is one of the chief gods, like Shiva and Vishnu. Before few years ago, while I was visiting a Shiva Temple along with my friends, I asked one of my friends to worship the shrine of Lord Brahma, and at that time, he answered to me, with a smile, “Don’t you know, Lord Brahma Deva has got only few temples in the world, and that’s why I didn’t want to worship him”.
Then, I have told about the significance of Lord Brahma Deva and made him to worship him sincerely.
According to me, Lord Brahma Deva must be first worshipped even before worshipping our own father and mother, since only through his grace we were able to take birth from the womb of our mother.
“OM SRI PARABRAHMANE NAMAHA”