Comment by lifthrasiir

Yes I haven't claimed that it will last forever. But you have claimed "there is no something that non brute-forcable today" haven't you? 2140 is not "today" nor a near future. In fact it is more likely that a flaw is found in existing algorithms before 2140. Do you make your system last that long? Then you would want to avoid algorithms already broken in 19th century.