1. I do not merely 'think' I am commanded to "keep the sabbath", but I "know" I am by Jesus' own words:
Joh 14:15 If ye love me, keep my commandments.
Exo 20:6 And shewing mercy unto thousands of them that love me, and keep my commandments.
2. It is not for me (you or anyone) to 'think' about that what I (you or they) want, apart from God's words, or to re-interpret (2 Pet. 1:20 KJB) what God has already interpreted (Gen. 40:8 KJB), but I (we) may only 'amen' what is already written therein (Isa. 8:20; 1 Pet. 4:11 KJB).
3. You have several mistaken assumptions, based on your incorrect previous a priori (bias), that you read into the text, when you ask your 'questions', which are more intended as 'gotchas' rather than sincere and earnest inquiry. Change this, and you will be able to better understand (Pro. 18:13,17 KJB) the answers.
a. The 4th commandment (Exo. 20:8-11 KJB) has two kinds of work involved in its wording.
II. that common (non-sacred) work which may be done on any other day, that is not sacred, called "thy work" (vs 9), rather than the Holy work of God's choosing in the first section (vs 8), should not be done on the sabbath day.
b. The sabbath sacred work is not only for 'emergencies' but does also include them, such as healing those that are injured, taking care of the wounded, putting out fires (quench the violence of fire), &c. There is also police work, and guarding of the city, such as is done at the Sanctuary itself (Lev. 24:12; Num. 15:34 KJB), even as done in the days of the Kings of Israel, and days of Jesus itself (2 Kin. 11:7; Jhn. 7:32 KJB)., since it is peace-keeping, and keeping 'order', and are as God's "minister(s)" (Rom. 13:4 KJB).
c. Reliance on people happens every day, even on the sabbath day, as children to parents (ie children rely on parents), the people upon their religious leaders for spiritual; food / guidance / instruction (Luk. 4:16-21; Act. 15:21 KJB), pets to owners (Luk. 13:15 KJB), and especially God's people to God to provide all things needful for that day, in prepping as much as possible the day before, as in God's providence, and God sustaining the following day, the sabbath of the LORD, for God had provided all things needful previously, so that none would lack. The city and sanctuary rely upon police (military), health and fire protections, as set up by God throughout scripture. Those in their nursing homes, hospitals, etc are cared for by God's graces by the ministering people he sends to them on sabbath. Such ministering is never against the commandment, but always in harmony with it, as Jesus showed from Gen. 2. Even selfless ministerial "service", in volunteer labour for others is not against the commandment, but in harmony with it.
d. The commandment is only focused on what is within your personal control / authority / dominion, as per "within thy gates". What the mailcarrier does is not within that control, but governmental. What the power, water, gas, utilities do, is not within your control or boundaries, and has nothing to do with violating the commandment. Since the scriptures say it is well to 'open a gate' to even allow animals to eat / drink, turning on a faucet (is simply opening a gate, and letting water that is already running to flow through), and the same goes for electricity, that is already flowing through the rivers of electrical wiring, and flipping a switch, is not kindling a fire, but is simply channeling the current already active, already burning through the now opened gate (switch) for use in the home.
e. The portion in regards "servants", &c. are referring to paid workers that are under the employ of the household owner. In other words, the maid, the chauffeur, the butler, the caddy, the cook, &c., get the day off. If they desire to stick around as part of the family and selflessly minister to others, as the rest of the family minister to each other in the same, that is their prerogative, and not against the commandment, but in harmony with it.
No, I do not have to spiritualize anything. I simply have to know my Bible better than you do, so I do not fall into such inane observations.