Why if the choice is Love does Ra say the choice is service?

[Diana]

In the context on the question of the OP, the poster wants to know the difference or perhaps a type of comparison so that they can weigh the options, the ideas to gain clarity.
It is difficult for seekers asking these sort of questions to weigh the great paradox.
When we speak of the paradox in these sort of questions it has the postential to create more confusion in the seeker. He or she is asking a question about Love and The Choice. We could answer with a simple answer and not go into abstraction. We do not always have to take things to the enth degree.
I feel if we speak about The Choice or Love, we should be clear about what this means and not go into the paradox of creation which eventually finds itself in Unity where all is reconciled at one point but NOT NOW during this question. Only some of us are beginning to reconcile the paradox and many seek to do so but first they must choose one side or the other side. There are sides so to speak (or there is no paradox). Just as there is Love and there is Hate. Sure, yes, Love and Hate are one of the same... the difference being the degrees by which one contains.
So, back to the question from the poster;

So I ask you again why service if the choice is love???

At risk of more rambling speculation which may or may not be answering anything   . . .

it may be helpful to understand the choice as acceptance vs. control. Love is a word that can be confusing, as humanity has its very ingrained and limited meanings of it, and it really has little to do (in my opinion) with the second distortion:

15.21 ▶ Questioner: Well, in yesterday’s material you stated “we offer the Law of One, the solving of paradoxes.” You also mentioned earlier that the first paradox, or the first distortion I meant, was the distortion of free will. Could you tell me if there’s a sequence? Is there a first, second, third, fourth distortion of the Law of One?

Ra: I am Ra. Only up to a very short point. After this point, the many-ness of distortions are equal one to another. The first distortion, free will, finds focus. This is the second distortion known to you as Logos, the Creative Principle or Love. This intelligent energy thus creates a distortion known as Light. From these three distortions come many, many hierarchies of distortions, each having its own paradoxes to be synthesized, no one being more important than another.

I think service has more to do with how one becomes aware of and interacts with, the second distortion, the Creative Principle (love). The word, service, is also a human word with connotations which are ingrained in human culture. If one has chosen the left-hand path, the way one would utilize the Creative Principle is by controlling it; if one has chosen the right-hand path, one seeks more of a partnership with the Creative Principle which honors its presence yet courts it, becomes one with it, rather than seeing the Creative Principle as something to use for particular purposes. And intrinsic to the second distortion is the first distortion: Free Will, which allows for either path to exist and be explored.

In the following quote, Ra is referring to Archetype 6, The Transformation of the Mind:

99.8 ▶  ...

Ra: I am Ra. We shall speak upon several aspects seriatim. Firstly, let us examine the crossed arms of the male who is to be transformed. What, O student, do you make of the crossing? What see you in this tangle? There is a creative point to be found in this element which was not discussed overmuch by the questioner.

Let us now observe the evaluation of the two females. The observation that to the left-hand path moves the roughly physical and to the right-hand path the mental has a shallow correctness. There are deeper observations to be made concerning the relationship of the great sea of the unconscious mind to the conscious mind which may fruitfully be pursued. Remember, O student, that these images are not literal. They haunt rather than explicate.

Many use the trunk and roots of mind as if that portion of mind were a badly used, prostituted entity. Then this entity gains from this great storehouse that which is rough, prostituted, and without great virtue. Those who turn to the deep mind, seeing it in the guise of the maiden, go forth to court it. The courtship has nothing of plunder in its semblance and may be protracted, yet the treasure gained by such careful courtship is great. The right-hand and left-hand transformations of the mind may be seen to differ by the attitude of the conscious mind towards its own resources as well as the resources of other-selves.