I really and truly believe that Jesus Christ is the only way to God. The other paths, while many lead to being good, moral people, IMO, lead not just away from God, but to eternal suffering. I don't want that for anyone.
You might not agree with me. You are well within your rights to reject Jesus. But at least it is your choice now and not a decision I have made to withhold it from you.
I have never called other beliefs "dumb." Maybe other Christians have, but I have not. I have called them "wrong", sincerely wrong, but wrong nonetheless.
I have also been ordered by God to tell others about Him. It is between the other person and God what their response would be.
I am truly sorry that you "can never accept the idea of seeking converts." That distresses me more than you could know.