Trinitarian Christian denominations that oppose infant baptism include the Assemblies of God, Association of Vineyard Churches, Christian and Missionary Alliance, Church of God (Cleveland, Tennessee), Calvary Chapel, Community Churches, Evangelical Free Church, Baptists, Gnostic Churches, Christian Church (Disciples of Christ), Christian Churches/Churches of Christ, and Churches of Christ as well as other Nondenominational Churches, International Churches of Christ, International Christian Church,[55] Foursquare Gospel Church. Church of God in Christ, Church of God of Prophecy, Grace Communion International, Anabaptists such as the Church of the Brethren, Mennonite, and Amish, Schwarzenau Brethren/German Baptists, the Seventh-day Adventist Church, some Methodists and most Pentecostals. Several nontrinitarian religious groups also oppose infant baptism, including Oneness Pentecostals, Christadelphians, Jehovah’s Witnesses, United Church of God, The Church of Jesus Christ of Latter-day Saints[56] and the Community of Christ.
The reasoning is that they believe baptism should be voluntary and desired by the follower of Christ. Hitler was baptized Roman Catholic as an infant; had he chosen following Christ and baptism as an adult, history would be markedly different.
And, NO, that's not a knock upon Catholic tradition, just an explanation of the attitude of some other Christian faiths.
So what?
Baptism doesn't save anyone any way so what's the big deal?