When I am tired and dont feel like trying I take break from SR and go to dominion.
I liked Dominion at first and then the more I played I noticed I started to get very bored with it. People say it's faster paced but that doesn't mean their is more action. In terms of kills per min then yes but in SR I am constantly engaged in doing something either lane battle/farming, positioning, setting up ganks, ganking, etc etc.
In dominion if you aren't playing bottom defense I am willing to bet that more then 50% of game time you spend literally doing nothing but running around, sitting at a point, or waiting to respawn. In actuality as long as you aren't terrible I find you spend more times actually engaged in SR.
What also doesn't help is team selection is closer to that of TT than SR. Tanky DPS, Tanky, DPS, types chars dominate. In this mode you have to be able to dish out damage as well as take it.
Fights don't usually last longer then 15 seconds, in fact it's usually the lvl 1 fight that is the longest and most entertaining one in the game.
At this point I play when someone says hey give 15 mins or so brb, or I find myself trying out new champs purchased as on Dominion right away because you rank up so fast you get a feeling for skills and you can also get an idea of mid/late game possibility fairly quickly.
I personally don't feel there is much depth to the game mode. I actually liked Arathi Basin in WoW but in LoL it doesn't deliver. I don't like the fog of war on the map and the terrain for the most part doesn't effect the match at all.
Ok I spent enough time explaining my thoughts now I think I'll do a dominion even though I know shortly I'll grow tired of constantly waiting to respawn and run to wherever I need to go. Actually I think the map might be a bit too big tbh, maybe that's it.