Ritualist is more powerful offensively and much more versatile.
Paragon = imbagon, cruel spear/stunning strike, half-baked melee and bow stuff... that's about it. SY! (Save Yourselves!) can be done on W/P or R/W with barrage so Paragon has only "TNTF!" (There's Nothing to Fear), technically (and they get it very early on, as evidenced by my test P/W on a secondary account). They also have energy problems in 4 and 6 man areas and shouts are up there with spirits in terms of boring to play. Almost all builds consist of spear attacks, an IAS, and a shout (or two). The entire motivation line is pretty much garbage.
Ritualist = Soul Twisting Protter, SoS spirits, SoGM damage spirits, DwG channeling, Splinter spam, Spirit's Strength spear, Splinter barrage, channeling+restoration magic hybrids, Spirit Channeling + restoration magic ... among others
Spamming spirits is stupidly boring as you said, but if you play a channeling or restoration build you won't be solely spirit spamming. Human Rits are better than Hero ones simply due to Summon Spirits.
...and then if you decide to PvP, nobody uses Paragons these days except in Alliance Battles (and never really did in 4 man Codex) but everyone runs rit flaggers in GvG.
It's fairly telling when Arenanet puts something like
http://wiki.guildwars.com/wiki/Jade_...hood_Ritualist in Winds of Change, where a Ritualist is using 2 Paragon shouts and restoration magic. The converse isn't really possible (P/Rt).