This would give you 20 buyins, considered by many the absolute minimum you want even with very aggressive bankroll management. With a roll of $200, it would be most unwise to play anything above $0.05/$0.10 blinds in NL format. If you're a beginning player or someone on a limited bankroll, you can stretch your resources further with the fixed bet sizes of limit. Thus, if you love postflop play and making decisions on the turn and river, Limit Hold'em may be for you. More hands become playable preflop, and the pot odds dictate that you can see more streets and go to showdown more often than in big-bet games.
Though the fixed-limit betting structure doesn't permit the exciting all-in pots that NL poker has, there are other advantages to LHE.