God has chosen to operate through people and tangible, physical stuff like sound waves (the Word), water (baptism), and bread and wine (the Eucharist). (Some will object to baptism and the Eucharist, but at least people and the Word should be conceded). To attack such things in the name of spirituality is to attack that which the Spirit is actually using. In fact, this line of attack sounds an awful lot like Gnosticism, which considers matter inherently corrupted and only the spiritual things pure.
As a quick, pointed example, the accusation that the Christian community abhors all things concerning sex isn’t an entirely fabricated. There are indeed Christians who will talk about sex as though it were some base, physical act that only serves to get in the way of spiritual pursuits. But God made us as sexual beings, and marriage was God’s way of creating godly children (Mal. 2). One gets the idea for some Christians that God permits people to have sex, but only reluctantly- so we should try very hard not to enjoy it and participate in it only as duty requires. Yea, compare and contrast that with the Song of Solomon, why don’t you!