Deliberately, as a matter of preference. For example, No one told me to come; I'm here by choice. This expression replaced the earlier with choice, used from about 1500.
Words nearby by choice
How to use by choice in a sentence
The choice between freedom and fear is not difficult when seen with perspective.Why We Stand With Charlie Hebdo—And You Should Too|John Avlon|January 8, 2015|DAILY BEAST
A step-by-step plan to break from your various technology addictions.
Those snakes attacked unwitting passers-by, or invaded homes and hotels.The Buddhist Business of Poaching Animals for Good Karma|Brendon Hong|December 28, 2014|DAILY BEAST
Serve with the warm sauce and your choice of ice cream, whipped cream, or yogurt.Make ‘The Chew’s’ Carla Hall’s Sticky Toffee Pudding|Carla Hall|December 28, 2014|DAILY BEAST
Removing choice is bullying and seems a horrid basis on which to anchor your relationship.
All along the highways and by-paths of our literature we encounter much that pertains to this "queen of plants."
John was baptizing at a large pool called Ænon-by-Saleim,—probably allegorical, meaning “Fountain of Repose.”Solomon and Solomonic Literature|Moncure Daniel Conway
The sewing-machine made a resounding clatter in the room; it was of a ponderous, by-gone make.The Awakening and Selected Short Stories|Kate Chopin
With some difficulty Jos explained his mother's disclaimer of the title of Senora, and the choice of names she offered to Ramona.Ramona|Helen Hunt Jackson
Then Mr. Blackbird selected a good many choice tidbits here and there, which he bolted with gusto.The Tale of Grandfather Mole|Arthur Scott Bailey