Did Paul teach that it is better to be unmarried than married?

Several verses in 1 Corinthians 7 seem to suggest that while marriage is acceptable, remaining single and abstaining completely from sexual relations is preferred. However, Joseph Smith Translation, 1 Corinthians 7:29–33 (see Bible appendix) helps us understand that Paul was referring to those called to be full-time missionaries, observing that they were able to serve God better if they remained single during their missions. 

The Lord has taught through His servants, including Paul, that marriage is part of His eternal plan and necessary for exaltation (see 1 Corinthians 11:11; D&C 131:1–4).

1 Corinthians 11:11

11 Nevertheless neither is the man without the woman, neither the woman without the man, in the Lord.

Doctrine and Covenants 131:1–4

1 In the celestial glory there are three heavens or degrees;

2 And in order to obtain the highest, a man must enter into this order of the priesthood [meaning the new and everlasting covenant of marriage];

3 And if he does not, he cannot obtain it.

4 He may enter into the other, but that is the end of his kingdom; he cannot have an increase.

Joseph Smith Translation, 1 Corinthians 7:29–33 (see Bible appendix) helps us understand that Paul was referring to those called to be full-time missionaries, observing that they were able to serve God better if they remained single during their missions. 

1 Corinthians 7:29–33

JST, 1 Corinthians 7:29–33

Joseph Smith Translation

29 But I speak unto you who are called unto the ministry. For this I say, brethren, the time that remaineth is but short, that ye shall be sent forth unto the ministry. Even they who have wives, shall be as though they had none; for ye are called and chosen to do the Lord’s work.

30 And it shall be with them who weep, as though they wept not; and them who rejoice, as though they rejoiced not, and them who buy, as though they possessed not;

31 And them who use this world, as not using it; for the fashion of this world passeth away.

32 But I would, brethren, that ye magnify your calling. I would have you without carefulness. For he who is unmarried, careth for the things that belong to the Lord, how he may please the Lord; therefore he prevaileth.

33 But he who is married, careth for the things that are of the world, how he may please his wife; therefore there is a difference, for he is hindered.