Perhaps the last 20+ years point qualification you make about WTS and sex is valid, I don't know. But this is the stuff I grew up with, and let me tell you, it had a BIG affect on me and on my peers. If you were not affected by this stuff, then you are relatively young:
"Thus 'fornication'
is set forth as the only ground for divorce. In the common Greek in which Jesus’
words are recorded, the term 'fornication' is por·nei'a, which designates all
forms of immoral sexual relations, perversions and lewd practices such as might
be carried on in a house of prostitution, including oral and anal copulation... Hence, circumstances could arise
that would make lewd practices of a married person toward that one’s marriage
mate a Scriptural basis for divorce. For example, a wife may do what she
reasonably can to prevent her husband from forcing upon her perversions such as
are carried on in a brothel. Yet, due to his greater strength, he might
overpower her and use her for perverted sex. So as not to be prostituted in
this way at another time, a Christian wife may decide to get a divorce... If,
on the other hand, the lewd practices were engaged in by mutual consent,
neither mate would have a basis for claiming por·nei'a as a Scriptural ground
for divorce. This is so because neither party is innocent and seeking freedom
from a mate guilty of por·nei'a. Both marriage partners are guilty. Such a
case, if brought to the attention of elders in the congregation, would be
handled like any other serious wrongdoing." (Watchtower, 1974, November 15, pages 703-704.)
"What,
though, if one mate wants or even demands to share with his or her partner in
what is clearly a perverted sex practice? The above-presented facts show
that porneia involves unlawful sexual conduct outside the marital arrangement.
Thus, a mate’s enforcing perverted acts, such as oral or anal sex,
within the marriage would not constitute a Scriptural basis for a divorce that
would free either for remarriage... if it becomes known that a member of the
congregation is practicing or openly advocating perverted sex relations within
the marriage bond, that one certainly would not be irreprehensible, and so
would not be acceptable for special privileges, such as serving as an elder, a
ministerial servant or a pioneer. Such practice and advocacy could even lead to
expulsion from the congregation." (Watchtower,
1983, March 15, page 31.)
"Likewise,
unclean practices, such as masturbation, which can be a steppingstone to
homosexuality, have been dealt with in a serious, yet understanding,
way, to help individuals keep clean and pure in Jehovah's eyes." (Watchtower, 1976, February 15, pages
122-123.)
"Helpful
in this regard, then, is appreciating the fact that autoeroticism or
masturbation is no mere innocent pastime but rather a practice that can lead
to homosexual acts." (Watchtower,
1970, May 15, page 315.)
"'Every
serious statistical study that we have shows clearly that . . . at least
ninety-five per cent of boys and young men between thirteen and twenty-five
years of age pass through periods of habitual masturbation of varying lengths,'
says one authority on the subject. As for girls, this source says that 'forty
to fifty per cent are found to actually masturbate'.... Because masturbation
is unnatural... Masturbation (like homosexuality) ignores or bypasses that
natural arrangement. It is one form of leaving 'the natural use of the female'
for 'one contrary to nature'... Because the practice is one 'contrary to
nature,' the masturbator pays a mental penalty. The habitual practice
cripples his social and emotional development, hinders his attaining a
healthful outlook and attitude toward the other sex and toward people in
general. It can 'turn the person inward' upon himself, making him introverted.
Or it can, and frequently does, lead into homosexuality, in which the
person, not satisfied with his lonely sexual activity, seeks a partner for
mutual sex play." (Watchtower,
1973 September 15, pages 564-565.)