Not that someone can't regret having to do something they don't see an alternative to, I just wonder how sincere he was.
In fact, he was offered and declined a presidential ticket immed. after WW2 to command NATO in Korea. So he wasn't politically-motivated.
One thing you could possibly fault Ike for is that when he criticized the military-industrial complex (MIC), he pulled his punches: he wanted to add Congress (a la MICC) but realized that doing so would make them feel defensive and reduce his support.
The reason Ike talked about the wastefulness of war was that the entire industrial outputs of the USA, Europe and Japan for almost a decade were wasted.
Please, please read this to get a better understanding for yourself: http://avalon.law.yale.edu/20th_century/eisenhower001.asp