This is not true. I have found that my life has been enriched, in an emotional sense. Before I was saved I was an emotional train wreck, I was scared of my own shadow. Now I am confident and assured. Besides all of that God has given me a great family, kids, and the like.
God is not against giving Christians things, note what He said to david:
2Sa 12:8 ...I let you rule Israel and Judah, and if that had not been enough, I would have given you much more.
God would have given David much more earthly glory had he not sinned.
Solomon, who is said to be the wisest man to ever live, said over and over:
Ecc 2:24 There is nothing better for a man, than that he should eat and drink, and that he should make his soul enjoy good in his labour. This also I saw, that it was from the hand of God.
Ecc 3:13 And also that every man should eat and drink, and enjoy the good of all his labour, it is the gift of God.
Ecc 5:18 Behold that which I have seen: it is good and comely for one to eat and to drink, and to enjoy the good of all his labour that he taketh under the sun all the days of his life, which God giveth him: for it is his portion.
Ecc 8:15 Then I commended mirth, because a man hath no better thing under the sun, than to eat, and to drink, and to be merry: for that shall abide with him of his labour the days of his life, which God giveth him under the sun.
Basically he commended that the believer enjoy their life, and he stated that the one who fears God will be able to do that. It has been my experience that the Christian life is enjoyable.
Yes the bible tells us that we will suffer rejection, and at times hurt as a Christain, but if you look at people like Job, their suffering was short-lived, and God restored his blessings.
Christians like Paul, chose a road lined will trials, so that the gospel could spread. Christians who dedicate their lives to spreading the gospel like him, can, and will to various degrees suffer persecution.
Yet even in their deep trials God filled Paul with inner spiritual joy.
God has many different ways to be glorified, and most commonly it is through giving his believers a victorious life.
Deu 28:13 And the LORD shall make thee the head, and not the tail; and thou shalt be above only, and thou shalt not be beneath; if that thou hearken unto the commandments of the LORD thy God, which I command thee this day, to observe and to do them:
Joh 10:10 The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly.