No, God did not decide to *share Himself that way*.
He dwells in each believer through the indwelling presence of the Holy Spirit who is given to the believer upon salvation.
Acts 17:24-25 The God who made the world and everything in it, being Lord of heaven and earth, does not live in temples made by man, nor is he served by human hands, as though he needed anything, since he himself gives to all mankind life and breath and everything.
Romans 8:9 You, however, are not in the flesh but in the Spirit, if in fact the Spirit of God dwells in you. Anyone who does not have the Spirit of Christ does not belong to him.
1 Corinthians 3:16-17 Do you not know that you are God's temple and that God's Spirit dwells in you? If anyone destroys God's temple, God will destroy him. For God's temple is holy and you are that temple.
1 Corinthians 6:19-20 Or do you not know that your body is a temple of the Holy Spirit within you, whom you have from God? You are not your own, for you were bought with a price. So glorify God in your body.
2 Corinthians 6:16For we are the temple of the living God; as God said,“I will make my dwelling among them and walk among them, and I will be their God, and they shall be my people.
2 Timothy 4:14 By the Holy Spirit who dwells within us, guard the good deposit entrusted to you.
Galatians 4:4-7 But when the fullness of time had come, God sent forth his Son, born of woman, born under the law, to redeem those who were under the law, so that we might receive adoption as sons. And because you are sons, God has sent the Spirit of his Son into our hearts, crying, “Abba! Father!” So you are no longer a slave, but a son, and if a son, then an heir through God.
1 Timothy 1:14 By the Holy Spirit who dwells within us, guard the good deposit entrusted to you.
1 John 2:27 But the anointing that you received from him abides in you, and you have no need that anyone should teach you. But as his anointing teaches you about everything, and is true, and is no lie—just as it has taught you, abide in him.
The fact that each one of us is a temple of the Holy Spirit does not negate the fact that we must eat and drink His Body and His Blood. They are not mutually exclusive propositions.
If you had ever read St. Teresa of Avila’s “Mansions” you would see that the aim of every Christian is union with God.
Worth reception of the Body and Blood of Christ is an immeasurable help in achieving this end.