But, the question isn't, is it needed? The question is, what did God intend? As I pointed out in another post, Jesus is needed here on earth too, but He's not here. When this subject is studied in depth it becomes quite clear that they ended. For one thing, if you look through the Scriptures you'll find that no one in the NT received the gifts without the presence of an apostle. Luke tells us that the Holy Spirit was given through the laying on of the apostles hands. Paul calls this, the gift of an apostle. He also writes to Timothy reminding him of how he received his gift.
6 Wherefore I put thee in remembrance that thou stir up the gift of God, which is in thee by the putting on of my hands. (2 Tim. 1:6 KJV)
So according to Scripture the way people got the gifts was through the apostles. How would someone get those gifts after the apostles were gone?
Paul started the church at Corinth and he said this.
3 Grace be unto you, and peace, from God our Father, and from the Lord Jesus Christ.
4 I thank my God always on your behalf, for the grace of God which is given you by Jesus Christ;
5 That in every thing ye are enriched by him, in all utterance, and in all knowledge;
6 Even as the testimony of Christ was confirmed in you:
7 So that ye come behind in no gift; waiting for the coming of our Lord Jesus Christ: (1 Cor. 1:3-7 KJV)
We see that the Corinthians were not lacking in the miraculous spiritual gifts. He said they were enriched in all utterance and knowledge. That's prophecy and knowledge. Now look at the Church at Rome that was not started by an apostle.
4 For as we have many members in one body, and all members have not the same office:
5 So we, being many, are one body in Christ, and every one members one of another.
6 Having then gifts differing according to the grace that is given to us, whether prophecy, let us prophesy according to the proportion of faith;
7 Or ministry, let us wait on our ministering: or he that teacheth, on teaching;
8 Or he that exhorteth, on exhortation: he that giveth, let him do it with simplicity; he that ruleth, with diligence; he that sheweth mercy, with cheerfulness. (Rom. 12:4-8 KJV)
Notice here that apart from prophecy these gifts are not supernatural. They're natural gifts that most anyone can have. This church didn't have the miraculous gifts like the church at Corinth had. The gift of Prophecy was likely with the person who had founded the church. So why didn't this church have the miraculous gifts that the Corinthian Church had? Paul said this.
11 For I long to see you, that I may impart unto you some spiritual gift, to the end ye may be established;
12 That is, that I may be comforted together with you by the mutual faith both of you and me. (Rom. 1:11-12 KJV)
Notice that Paul wants to go there and impart spiritual gifts to them. Again this indicates that the gifts were given through the apostles. Again, how would one get the gifts when the apostles aren't here anymore?