Marriage is by no means "easy". However, there are a lot of reasons to desire marriage. Here are some:
1) Most (~90% I think) people feel called to marriage. If you don't have the desire, it generally means God has other plans for your life thus purposely didn't give you the desire.
2) Marriage between man and woman is a ministry in and of itself.The two become one working synchronously with one another.
3) Sex. This may sound selfish, but the truth is God gave us the desire for sex to entice us for marriage (NOT for self-fulfillment as the world sees it). How great it must be to raise a family who loves God and glorifies Him.
4) Finances. In the U.S. married couples receive tax breaks and other incentives. Also (at least in the beginning) the two are generally able to save more with two incomes.
5) Marriage can act as a sanctuary/safe haven from sin. As mentioned above, the two become one flesh: you are able to tell each other everything and trust each other 100%. If this doesn't happen, then it usually means someone is feeling convicted about something they said or did. As with other sin, if a person is feeling too prideful and unwilling to seek forgiveness, things can go awry quickly.
6) Intimate Companionship. Intimacy is a very complicated and "deep" emotion. Intimacy is not limited to sensuality, it can include discussing very personal topics one on one with another person. You can be intimate with your best friend without being sensual, but the truth is, your best friend is not committed to you- that's where the companionship part comes into play. Presumably your spouse will be there through thick and thin. Nobody likes to be alone.
Not seeking a godly marriage simply because you don't want the responsibility is, in my opinion, selfish. (Actually, as you get older, you will be saddled with more responsibility. There's no escaping it! Yet another reason marriage is good, with two people working together in sync you can get more done!) That's not to say that marriage should be your #1 priority, it just means you should be open to it happening sooner rather than later. After all, not all of us are in a position to be married right now.