It isn't because it's "scary", nor is it "because many have not experienced Him and His love". All true believers know intimacy with God the very minute the Holy Spirit comes to
dwell in them. That's intimate. That's when the love of God is shed abroad on our hearts. We don't have to learn to be intimate or take lessons on how to be intimate....it's what HE accomplishes in us as we are being conformed into the image of the Son.
It's why I keep silent on this issue. It's private.....it's intimate....it's personal. And, in my opinion, it absolutely
does leave room for boasting. Man must ever guard against the temptation to appear more holy and closer to God than the next guy.
2 Corinthians 10:12
For we dare not make ourselves of the number, or compare ourselves with some that commend themselves: but they measuring themselves by themselves, and comparing themselves among themselves, are not wise.