Remind me again why online multiplayer matters.

[Jaywood2010]

3 Reasons.

Reason 1. Halo on Xbox and X360 lit up the Online World

1	Halo 3	X360	2007	Shooter	Microsoft Game Studios	7.74	2.64	0.13	1.28	11.79
2	Halo: Reach	X360	2010	Shooter	Microsoft Game Studios	6.72	1.39	0.08	1.27	9.45
3	Halo 2	XB	2004	Shooter	Microsoft Game Studios	6.82	1.53	0.05	0.08	8.49
4	Halo 4	X360	2012	Shooter	Microsoft Game Studios	5.78	1.88	0.04	0.78	8.48
5	Halo: Combat Evolved	XB	2001	Shooter	Microsoft Game Studios	4.98	1.30	0.08	0.07	6.43
6	Halo 3: ODST	X360	2009	Shooter	Microsoft Game Studios	4.21	1.26	0.06	0.64	6.17

Reason 2.  Call of Duty becomes the quickest selling franchise of all time during the online generation

1	Call of Duty: Modern Warfare 3	X360	2011	Shooter	Activision	9.29	4.15	0.13	1.44	15.01
2	Call of Duty: Black Ops	X360	2010	Shooter	Activision	9.13	1.86	0.11	2.91	14.01
3	Call of Duty: Modern Warfare 2	X360	2009	Shooter	Activision	8.30	3.28	0.08	1.41	13.07
4	Call of Duty: Modern Warfare 3	PS3	2011	Shooter	Activision	5.50	4.80	0.48	2.05	12.84
5	Call of Duty: Black Ops II	X360	2012	Shooter	Activision	7.73	3.67	0.04	1.23	12.68
6	Call of Duty: Black Ops	PS3	2010	Shooter	Activision	5.71	2.01	0.48	3.82	12.02
7	Call of Duty: Black Ops II	PS3	2012	Shooter	Activision	4.48	4.02	0.49	1.71	10.69
8	Call of Duty: Modern Warfare 2	PS3	2009	Shooter	Activision	4.87	3.30	0.38	1.65	10.19
9	Call of Duty 4: Modern Warfare	X360	2007	Shooter	Activision	5.65	2.18	0.13	0.97	8.92
10	Call of Duty: World at War	X360	2008	Shooter	Activision	4.52	1.70	0.00	0.75	6.97
11	Call of Duty 4: Modern Warfare	PS3	2007	Shooter	Activision	2.94	2.04	0.28	1.07	6.34
12	Call of Duty: World at War	PS3	2008	Shooter	Activision	2.53	1.63	0.00	0.87	5.03

3. Sports Games Benifits from Online during the Online generation (Notice 4 of the top 5 are on the Online Gen consoles even though PS2 is the most sold console of all time)

1	FIFA Soccer 13	PS3	2012	Action	Electronic Arts	0.95	4.26	0.11	1.50	6.82
2	FIFA Soccer 12	PS3	2011	Sports	Electronic Arts	0.79	3.25	0.11	2.26	6.41
3	FIFA Soccer 11	PS3	2010	Sports	Electronic Arts	0.58	1.95	0.06	2.34	4.93
4	FIFA Soccer 13	X360	2012	Action	Electronic Arts	0.98	3.31	0.02	0.62	4.93
5	FIFA Soccer 06	PS2	2005	Sports	Electronic Arts	0.78	2.55	0.04	0.84	4.21

In the end some people like multiplayer and some dont.  Dont complain because others like something different than you do though. People enjoy the social and competitive experience would be the main reason.  I love something, but I love it more if i can share the things i love with other people who loves the same thing.