I passed my whole life playing chess with 1 e4. That was the way i learned and the way most ppl learn. So i m 40 now and since 9 years old i only play e4. After read an article which says blackmar diemer opening is the more effetive for white i decided to try 1 d4. And it is really great the results u get. I sugest halosar trap 1d4 d5 2e4 dxe3.Nc3 Nf6 4.f3exf 5.Qxf Bg4 6.Nb5 BxQ Nc7++ probably black will follow all those steps but if he does dont worry u have lot og good things to do with this opening