by choice

adv by choice

• willingly — disposed or consenting; inclined: willing to go along.
• first — being before all others with respect to time, order, rank, importance, etc., used as the ordinal number of one: the first edition; the first vice president.
• sooner — a native or inhabitant of Oklahoma (the Sooner State, ) (used as a nickname).
• alternately — in an alternating sequence or position
• alternatively — You use alternatively to introduce a suggestion or to mention something different to what has just been stated.