You clain the name "Roman Catholic", yet you twist the words of Christ into some vague meaning. "I will be with you always" means that He will remain with those who are faithful to Him. When He is pushed off and put into the obscure closet, neglected and abused by the Judas' that are supposed to worship Him, HE LEAVES.
Yes, He will always be with those who remain faithful to Him and the Church He established, in the Blessed Sacrament, through the Holy Sacrifice of the Mass. The end of time is marked by the last Holy Sacrifice of the Mass - not by any new liturgy.
The very last Holy Sacrifice of the Mass may well be in NO, whether you or I like it or not.